@article {2395,
	title = {The crystal structure of the C-terminus of adseverin reveals the actin-binding interface},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {106},
	number = {33},
	year = {2009},
	note = {ISI Document Delivery No.: 484WETimes Cited: 0Cited Reference Count: 21Chumnarnsilpa, Sakesit Lee, Wei Lin Nag, Shalini Kannan, Balakrishnan Larsson, Marten Burtnick, Leslie D. Robinson, Robert C.},
	month = {Aug},
	pages = {13719-13724},
	type = {Article},
	abstract = {Adseverin is a member of the calcium-regulated gelsolin superfamily of actin severing and capping proteins. Adseverin comprises 6 homologous domains (A1-A6), which share 60\% identity with the 6 domains from gelsolin (G1-G6). Adseverin is truncated in comparison to gelsolin, lacking the C-terminal extension that masks the F-actin binding site in calcium-free gelsolin. Biochemical assays have indicated differences in the interaction of the C-terminal halves of adseverin and gelsolin with actin. Gelsolin contacts actin through a major site on G4 and a minor site on G6, whereas adseverin uses a site on A5. Here, we present the X-ray structure of the activated C-terminal half of adseverin (A4-A6). This structure is highly similar to that of the activated form of the C-terminal half of gelsolin (G4-G6), both in arrangement of domains and in the 3 bound calcium ions. Comparative analysis of the actin-binding surfaces observed in the G4-G6/actin structure suggests that adseverin in this conformation will also be able to interact with actin through A4 and A6, whereas the A5 surface is obscured. A single residue mutation in A4-A6 located at the predicted A4/actin interface completely abrogates actin sequestration. A model of calcium-free adseverin, constructed from the structure of gelsolin, predicts that in the absence of a gelsolin-like C-terminal extension the interaction between A2 and A6 provides the steric inhibition to prevent interaction with F-actin. We propose that calcium binding to the N terminus of adseverin dominates the activation process to expose the F-actin binding site on A2.},
	keywords = {74-KDA PROTEIN, ACTIVATION, calcium activated, EXOCYTOSIS, gelsolin, HALF, LOCALIZATION, SCINDERIN, SITE, TIRF},
	isbn = {0027-8424},
	url = {<Go to ISI>://000269078700019},
	author = {Chumnarnsilpa, S. and Lee, W. L. and Nag, S. and Kannan, B. and Larsson, M. and Burtnick, L. D. and Robinson, R. C.}
}
@article {2437,
	title = {Identification of Nitroxyl-induced Modifications in Human Platelet Proteins Using a Novel Mass Spectrometric Detection Method},
	journal = {Molecular \& Cellular Proteomics},
	volume = {8},
	number = {5},
	year = {2009},
	note = {ISI Document Delivery No.: 446JCTimes Cited: 5Cited Reference Count: 67Hoffman, Michael D. Walsh, Geraldine M. Rogalski, Jason C. Kast, Juergen},
	month = {May},
	pages = {887-903},
	type = {Article},
	abstract = {Nitroxyl (HNO) exhibits many important pharmacological effects, including inhibition of platelet aggregation, and the HNO donor Angeli{\textquoteright}s salt has been proposed as a potential therapeutic agent in the treatment of many diseases including heart failure and alcoholism. Despite this, little is known about the mechanism of action of HNO, and its effects are rarely linked to specific protein targets of HNO or to the actual chemical changes that proteins undergo when in contact with HNO. Here we study the presumed major molecular target of HNO within the body: protein thiols. Cysteine-containing tryptic peptides were reacted with HNO, generating the sulfinamide modification and, to a lesser extent, disulfide linkages with no other long lived intermediates or side products. The sulfinamide modification was subjected to a comprehensive tandem mass spectrometric analysis including MS/MS by CID and electron capture dissociation as well as an MS3 analysis. These studies revealed a characteristic neutral loss of HS(O)NH2 (65 Da) that is liberated from the modified cysteine upon CID and can be monitored by mass spectrometry. Upon storage, partial conversion of the sulfinamide to sulfinic acid was observed, leading to coinciding neutral losses of 65 and 66 Da (HS(O)OH). Validation of the method was conducted using a targeted study of nitroxylated glyceraldehyde-3-phosphate dehydrogenase extracted from Angeli{\textquoteright}s salt-treated human platelets. In these ex vivo experiments, the sample preparation process resulted in complete conversion of sulfinamide to sulfinic acid, making this the sole subject of further ex vivo studies. A global proteomics analysis to discover platelet proteins that carry nitroxyl-induced modifications and a mass spectrometric HNO dose-response analysis of the modified proteins were conducted to gain insight into the specificity and selectivity of this modification. These methods identified 10 proteins that are modified dose dependently in response to HNO, whose functions range from metabolism and cytoskeletal rearrangement to signal transduction, providing for the first time a possible mechanistic link between HNO-induced modification and the physiological effects of HNO donors in platelets. Molecular \& Cellular Proteomics 8: 887-903, 2009.},
	keywords = {ACTIVATION, ALDEHYDE, ALZHEIMERS-DISEASE, BIOLOGICAL-ACTIVITY, DEHYDROGENASE, DETERRENT AGENT CYANAMIDE, INTEGRIN, NITRIC-OXIDE, NITROGEN-OXIDE, NMDA RECEPTOR, S-NITROSYLATION, SUCCINIMIDE FORMATION},
	isbn = {1535-9476},
	url = {<Go to ISI>://000266116900002},
	author = {Hoffman, M. D. and Walsh, G. M. and Rogalski, J. C. and Kast, J.}
}
@article {2627,
	title = {Noninnocent Behavior of Ancillary Ligands: Apparent Trans Coupling of a Saturated N-Heterocyclic Carbene Unit with an Ethyl Ligand Mediated by Nickel},
	journal = {Journal of the American Chemical Society},
	volume = {131},
	number = {30},
	year = {2009},
	note = {ISI Document Delivery No.: 479FFTimes Cited: 6Cited Reference Count: 26Steinke, Tobias Shaw, Bryan K. Jong, Howard Patrick, Brian O. Fryzuk, Michael D. Green, Jennifer C.},
	month = {Aug},
	pages = {10461-10466},
	type = {Article},
	abstract = {Oxidative addition of the tridentate N-heterocyclic carbene (NHC) diphosphine ligand precursor ([PCP]H)PF6 (1) {[PCP] = o-(Pr2PC6H4)-Pr-i(NC3H4N)o-(C6H4PPr2)-Pr-i} to Ni(COD)(2) results in the formation of the nickel(II) hydride complex ([PCP]NiH)PF6 (2). This hydride undergoes a rapid reaction with ethylene to generate a nickel(O) complex in which an ethyl group has been transferred to the carbene carbon of the original NHC-diphosphine ligand. If the first intermediate is the anticipated square-planar nickel(II) ethyl species, then the formation of the product would require a process that involves a trans C-C coupling of the NHC carbon and a presumed Ni-ethyl intermediate. Deuterium-labeling studies provide evidence for migratory insertion of the added ethylene into the Ni-H bond rather than into the Ni-catene linkage; this is based on the observed deuterium scrambling, which requires reversible P-elimination, alkene rotation, and hydride readdition. However, density functional theory studies suggest that a key intermediate is an agostic ethyl species that has the Ni-C bond cis to the NHC unit. A possible transition state containing two cis-disposed carbon moieties was also identified. Such a process represents a new pathway for catalyst deactivation involving NHC-based metal complexes.},
	keywords = {ACTIVATION, CHEMISTRY, COMPLEXES, MECHANISM, MIGRATORY INSERTION, NHC, ORGANOMETALLIC CATALYSIS, palladium, REDUCTIVE ELIMINATION, ruthenium},
	isbn = {0002-7863},
	url = {<Go to ISI>://000268644400040},
	author = {Steinke, T. and Shaw, B. K. and Jong, H. and Patrick, B. O. and Fryzuk,Michael D. and Green, J. C.}
}
@article {2373,
	title = {Reactions of Two Cp*W(NO) Complexes with Heterocyclic Olefins},
	journal = {Organometallics},
	volume = {28},
	number = {4},
	year = {2009},
	note = {ISI Document Delivery No.: 408FHTimes Cited: 1Cited Reference Count: 15Buschhaus, Miriam S. A. Semiao, Christopher J. Legzdins, Peter},
	month = {Feb},
	pages = {1122-1126},
	type = {Article},
	abstract = {Cp*W(NO)(CH2CMe3)(2) (1) and Cp*W(NO)(CH2SiMe3)(eta(2)-CPhCH2) (2), two complexes which initiate the catalytic ring-retaining oligomerization of cyclic olefin substrates from cyclopentene to cyclooctene, have been reacted with analogous heteroatom-containing cyclic olefins under thermolytic conditions. These reactions with 2,5-dihydrofuran, 3,4-dihydro-2H-pyran, and 1,2,3,6-tetrahydropyridine do not result in the formation of oligomeric organic products but, rather, afford organometallic complexes resulting from alternate modes of substrate reactivity, such as ring-opening C-O bond cleavage and N-H activation.},
	keywords = {ACTIVATION, BONDS, TUNGSTEN},
	isbn = {0276-7333},
	url = {<Go to ISI>://000263420400026},
	author = {Buschhaus, M. S. A. and Semiao, C. J. and Legzdins,Peter}
}
@article {1368,
	title = {Calcium ion exchange in crystalline gelsolin},
	journal = {Journal of Molecular Biology},
	volume = {357},
	number = {3},
	year = {2006},
	note = {ISI Document Delivery No.: 030IYTimes Cited: 6Cited Reference Count: 24},
	month = {Mar},
	pages = {773-782},
	type = {Article},
	abstract = {Gelsolin is a calcium and pH-sensitive modulator of actin filament length. Here, we use X-ray crystallography to examine the extraction and exchange of calcium ions from their binding sites in different crystalline forms of the activated N and C-terminal halves of gelsolin, G1-G3 and G4-G6, respectively. We demonstrate that the combination of calcium and low pH activating conditions do not induce conformational changes in G4-G6 beyond those elicited by calcium alone. EGTA is able to remove calcium ions bound to the type I and type II metal ion-binding sites in G4-G6. Constrained by crystal contacts and stabilized by interdomain interaction surfaces, the gross structure of calcium-depleted G4-G6 remains that of the activated form. However, high-resolution details of changes in the ion-binding sites may represent the initial steps toward restoration of the arrangement of domains found in the calcium-free inactive form of gelsolin in solution. Furthermore, bathing crystals with the trivalent calcium ion mimic, Tb3+, results in anomalous scattering data that permit unequivocal localization of terbium ions in each of the proposed type I and type II ion-binding sites of both halves of gelsolin. In contrast to predictions based on solution studies, we find that no calcium ion is immune to exchange. (c) 2006 Elsevier Ltd. All rights reserved.},
	keywords = {actin, ACTIN MONOMER, ACTIVATION, apoptosis, BINDING-SITE, C-TERMINAL HALF, calcium activation, COMPLEX, CONFORMATIONAL CHANGE, DOMAINS, ELECTRON-DENSITY MAPS, gelsolin, IDENTIFICATION, MECHANISMS, protein crystallography},
	isbn = {0022-2836},
	url = {<Go to ISI>://000236629300008},
	author = {Chumnarnsilpa, S. and Loonchanta, A. and Xue, B. and Choe, H. and Urosev, D. and Wang, H. and Lindberg, U. and Burtnick, L. D. and Robinson, R. C.}
}
@article {1505,
	title = {Identification of sokotrasterol sulfate as a novel proangiogenic steroid},
	journal = {Circulation Research},
	volume = {99},
	number = {3},
	year = {2006},
	note = {ISI Document Delivery No.: 070DTTimes Cited: 3Cited Reference Count: 39Murphy, Siun Larrivee, Bruno Pollet, Ingrid Craig, Kyle S. Williams, David E. Huang, Xin-Hui Abbott, Megan Wong, Fred Curtis, Cameron Conrads, Thomas P. Veenstra, Timothy Puri, Mira Hsiang, York Roberge, Michel Andersen, Raymond J. Karsan, Aly},
	month = {Aug},
	pages = {257-265},
	type = {Article},
	abstract = {The potential to promote neovascularization in ischemic tissues using exogenous agents has become an exciting area of therapeutics. In an attempt to identify novel small molecules with angiogenesis promoting activity, we screened a library of natural products and identified a sulfated steroid, sokotrasterol sulfate, that induces angiogenesis in vitro and in vivo. We show that sokotrasterol sulfate promotes endothelial sprouting in vitro, new blood vessel formation on the chick chorioallantoic membrane, and accelerates angiogenesis and reperfusion in a mouse hindlimb ischemia model. We demonstrate that sulfation of the steroid is critical for promoting angiogenesis, as the desulfated steroid exhibited no endothelial sprouting activity. We thus developed a chemically synthesized sokotrasterol sulfate analog, 2 beta,3 alpha,6 alpha-cholestanetrisulfate, that demonstrated equivalent activity in the hindlimb ischemia model and resulted in the generation of stable vessels that persisted following cessation of therapy. The function of sokotrasterol sulfate was dependent on cyclooxygenase-2 activity and vascular endothelial growth factor induction, as inhibition of either cyclooxygenase-2 or vascular endothelial growth factor blocked angiogenesis. Surface expression of alpha(v)beta(3) integrin was also necessary for function, as neutralization of alpha(v)beta(3) integrin, but not beta(1) integrin, binding abrogated endothelial sprouting and antiapoptotic activity in response to sokotrasterol sulfate. Our findings indicate that sokotrasterol sulfate and its analogs can promote angiogenesis in vitro and in vivo and could potentially be used for promoting neovascularization to relieve the sequelae of vasoocclusive diseases.},
	keywords = {ACTIVATION, ANGIOGENESIS, apoptosis, ARTERIOGENESIS, ENDOTHELIAL-CELLS, endothelium, IN-VITRO, INHIBITION, INTEGRIN ALPHA(V)BETA(3), ischemia, MARINE NATURAL-PRODUCTS, NF-KAPPA-B},
	isbn = {0009-7330},
	url = {<Go to ISI>://000239501200009},
	author = {Murphy, S. and Larrivee, B. and Pollet, I. and Craig, K. S. and Williams, D. E. and Huang, X. H. and Abbott, M. and Wong, F. and Curtis, C. and Conrads, T. P. and Veenstra, T. and Puri, M. and Hsiang, Y. and Roberge, M. and Andersen, R. J. and Karsan, A.}
}
@article {1185,
	title = {Functionalization and cleavage of coordinated dinitrogen via hydroboration using primary and secondary boranes},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {83},
	number = {4},
	year = {2005},
	note = {ISI Document Delivery No.: 921DLTimes Cited: 14Cited Reference Count: 30},
	month = {Apr},
	pages = {315-323},
	type = {Article},
	abstract = {The reaction of the side-on, end-on ditantalum dinitrogen complex ([NPN]Ta)(2)(mu-eta(1):eta(2)-N-2)(mu-H)(2) (where NPN = PhP(CH2SiMe2NPh)(2)) with a variety of secondary and primary boranes is reported. With 9-BBN, hydroboration of the Ta2N2 unit occurs via B-H addition, which in turn triggers a cascade of reactions that result in N-N bond cleavage, ancillary ligand rearrangement involving silicon group migration, and finally elimination of benzene from the N-Ph group and a B-H moiety to generate the imide-nitride derivative. In the presence of excess 9-BBN, the Lewis acid - base adduct of the imide-nitride ([NP mu-N]Ta(=NBC8H14)(mu-NB(H)C8H14)Ta[NPN]) is formed. A similar set of reactions is observed for dicyclohexylborane (Cy2BH), which hydroborates the dinitrogen complex to generate [NPN]Ta(H)(mu-eta(1):eta(2)-NNBCy2)(mu-H)(2)Ta[NPN], followed by loss of H-2 and silicon group migration to yield the imide-nitride [NP mu-N]Ta(=NBCy2)(mu-N)(Ta[NPN]. With thexyl borane (H2BCMe2CHMe2), a similar sequence of reactions is suggested starting with hydroboration to generate [NPN]Ta(H)(mu-eta(1):eta(2)-NNB(H)C6H13)(mu-H)(2)Ta[NPN], followed by loss of H-2 and ancillary ligand rearrangement. When bis(pentafluorophenyl)borane (HB(C6F5)(2)) is used, no hydroboration of coordinated N-2 is observed, rather simple adduct formation to give ([NPN]Ta)(2)(mu-eta(1):eta(2)-NN-B(H)(C6F5)(2))(mu-H)(2) occurs.},
	keywords = {ACTIVATION, ammonia, CHEMISTRY, DINITROGEN, END-ON, FIXATION, hydroboration, METAL-COMPLEXES, MOLECULAR NITROGEN, MOLYBDENUM, N-2, N-N bond cleavage, SIDE-ON, tantalum},
	isbn = {0008-4042},
	url = {<Go to ISI>://000228744300008},
	author = {MacKay, B. A. and Johnson, S. A. and Patrick, B. O. and Fryzuk,Michael D.}
}
@article {1186,
	title = {Hydroalumination of a dinuclear tantalum dinitrogen complex: N-N bond cleavage and ancillary ligand rearrangement},
	journal = {Organometallics},
	volume = {24},
	number = {16},
	year = {2005},
	note = {ISI Document Delivery No.: 949ZKTimes Cited: 15Cited Reference Count: 32},
	month = {Aug},
	pages = {3836-3841},
	type = {Article},
	abstract = {The addition of diisobutylaluminum hydride (DIBAL) to the side-on end-on dinitrogen complex ([NPN]Ta)(2)(mu-eta(1):eta(2)-N-2)(mu-H)(2), 1 (where [NPN] = (PhNSiMe2CH2)(2)PPh), is described. The two end products are diastereomeric rotational isomers in which N-N bond cleavage has occurred with an Al(Bu-i)H group attached to one of the nitride atoms. The reaction proceeds through addition of DIBAL to 1 to generate a thermally sensitive intermediate that has been characterized in solution as the result of Al-H addition across the TaN2 moiety, namely, ([NPN]TaH)(mu-eta(1):eta(2)-NNA1(i)Bu(2))(mu-H)(2)(Ta[NPN), 2. This material subsequently rearranges via a second thermally labile intermediate to ultimately generate two diastereomeric end products that show N-N bond cleavage, loss of H-2, loss of an aluminum isobutyl group, and NPN ligand migration from tantalum to aluminum. Both of these complexes have been isolated in crystalline form and analyzed by single-crystal X-ray diffraction. The second thermally sensitive intermediate has been characterized on the basis of multinuclear NMR spectroscopy as ([NPN]TaH)(mu-eta(1):eta(2)-(NNAlBu)-Bu-i(mu-H))(mu-H)(2)(Ta[NPN), 3.},
	keywords = {ACTIVATION, ATMOSPHERIC NITROGEN, CHEMISTRY, COORDINATED DINITROGEN, END-ON, FUNCTIONALIZATION, METAL-COMPLEXES, MOLECULAR NITROGEN, N-2, SIDE-ON},
	isbn = {0276-7333},
	url = {<Go to ISI>://000230827200007},
	author = {MacKay, B. A. and Patrick, B. O. and Fryzuk,Michael D.}
}
@article {1113,
	title = {Intramolecular C-H and N-H transfer by ruthenium(II) amidophosphine complexes},
	journal = {Organometallics},
	volume = {24},
	number = {22},
	year = {2005},
	note = {ISI Document Delivery No.: 976PNTimes Cited: 6Cited Reference Count: 51},
	month = {Oct},
	pages = {5440-5454},
	type = {Article},
	abstract = {The formation of ruthenium amidophosphine complexes was accomplished by the addition Of [P2N2]Li-2(Diox) (where P2N2 is PhP(CH2SiMe2NSiMe2CH2)(2)PPh and Diox is 1,4-dioxane) to [RuCl2(cod)](x) to generate [P2N2]Ru(cod), or to RuCl2(PPh3)(3) to generate [P2NNH]Ru(C6H4PPh2) In the former complex, the Ru(II) center is in an octahedral environment perched above the P2N2 macrocycle having two formally anionic amido donors; in the latter complex, there is only one amido ligand with the other as an amine donor where the proton originates from the cyclometalated triphenylphosphine group. Reaction of the tridentate amidophosphine ligand precursor [NPN]Li-2(THF)(2) (where NPN is PhP(CH2SiMe2NPh)(2)) with [RuCl2(cod)](x) results in the formation of two diastereomeric complexes of the formula [NPNH]Ru(eta(3):eta(2)-C8H11), wherein the cyclooctadiene ligand has been deprotonated by the ancillary ligand to generate a cyclooctadienyl unit. These Ru(II) complexes are five-coordinate with a bidentate PN ligand and a dangling amine unit. The diastereomers are in equilibrium, as shown by variable-temperature NMR studies. The fluxional process that interconverts diastereomers involves proton transfer from the dangling amine arm to the amido unit, a process that equilibrates the two ends of the tridentate NPN ligand on the chemical time scale. Deprotonation of the amine arm by MN(SiMe3)(2) generates a series of ruthenate complexes of the formula [M(THF)]([NPN]Ru(eta(3):eta(2)-C8H11)), where M = Li or Na. Addition of Me3SiCl results in the formation of new diastereomers that contain silylated dangling arms, and these diastereomers do not interconvert.},
	keywords = {ACTIVATION, AMIDO COMPLEXES, asymmetric, D6 ML5 COMPLEXES, ENANTIOSELECTIVE HYDROGENATION, EXCHANGE-REACTIONS, HYDROGENATION, KETONES, OPPORTUNITIES NOBEL LECTURE, RU-X BOND, STEREOSELECTIVE HYDROGENATION},
	isbn = {0276-7333},
	url = {<Go to ISI>://000232745700031},
	author = {Fryzuk,Michael D. and Petrella, M. J. and Patrick, B. O.}
}
@article {1190,
	title = {Rhodium(III)-cyclometalated-imine complexes: Solution behavior and reactivity with molecular hydrogen},
	journal = {Organometallics},
	volume = {24},
	number = {7},
	year = {2005},
	note = {ISI Document Delivery No.: 909LJTimes Cited: 16Cited Reference Count: 41},
	month = {Mar},
	pages = {1445-1451},
	type = {Article},
	abstract = {Acetone solutions of cis, trans, cis-[Rh(H)(2)(PPh3)(2)(acetone)(2)] PF6 and cis-[Rh(PPh3)(2)(acetone)(2)]PF6 react with the imines RN=CR {\textquoteright}(R {\textquoteright}{\textquoteright}), where R = PhCH2, Ph, or C6H11; R {\textquoteright}= H or Me; and R {\textquoteright}{\textquoteright} = Ph or P-OMe-C6H4, to form orthometalated complexes exemplified by [Rh(H){RN= CR {\textquoteright}(o-C6H4)}(PPh3)(2)(acetone)]PF6 that are generally characterized spectroscopically, and in one case (where R = PhCH2, R {\textquoteright} = Me, and R {\textquoteright}{\textquoteright} = p-OMe-C6H4) by X-ray crystallography. These complexes maintain their integrity in acetone solution and show no reaction toward 1 atm H-2 at ambient conditions. In MeOH, the complexes in which R {\textquoteright} = Me simply change to the corresponding MeOH derivative, but when R {\textquoteright} = H they are partially converted to the non-orthometalated, eta(1)-N-imine species [Rh(PPh3)(2)(RN=CHR {\textquoteright}{\textquoteright})(MeOH)]PF6 (I), and in MeOH, stoichiometric hydrogenation of the imine to the corresponding amine occurs via I. We have shown recently (Inorg. Chem. 2004, 43, 4820) that the catalyzed hydrogenation of PhCH2N=C(H)Ph to dibenzylamine using cis, trans, cis- [Rh(H)(2)(PPh3)(2)(MeOH)(2)] PF6 as catalyst precursor in MeOH proceeds via a cationic Rh-(eta(1)-N-imine)(amine) intermediate (II), analogous to I but with the MeOH replaced by the amine that is formed via hydrolysis of the imine by the presence of adventitious water. Intermediate I (R = PhCH2, R {\textquoteright}{\textquoteright} = Ph) is shown to be somewhat less active than II toward H-2, but both intermediates provide viable pathways for hydrogenation of the imine. The orthometalated imine-amine complex [Rh(H){PhCH2N=C(Me)(o-C6H4)}(PPh3)(2)(NH2CH2Ph)]PF6, where the benzylamine comes from imine hydrolysis, is also isolated and characterized crystallographically.},
	keywords = {ACTIVATION, AZO, C-H BONDS, CATIONIC, CLEAVAGE, COMPLEXES, CRYSTAL, LIGANDS, METAL-IMINE COMPOUNDS, RHODIUM(III) COMPLEXES},
	isbn = {0276-7333},
	url = {<Go to ISI>://000227861100013},
	author = {Marcazzan, P. and Patrick, B. O. and James, Brian R.}
}
@article {1053,
	title = {The state of the filament},
	journal = {Embo Reports},
	volume = {6},
	number = {3},
	year = {2005},
	note = {ISI Document Delivery No.: 901QMTimes Cited: 22Cited Reference Count: 30},
	month = {Mar},
	pages = {220-226},
	type = {Review},
	abstract = {Movement is a defining characteristic of life. Macroscopic motion is driven by the dynamic interactions of myosin with actin filaments in muscle. Directed polymerization of actin behind the advancing membrane of a eukaryotic cell generates microscopic movement. Despite the fundamental importance of actin in these processes, the structure of the actin filament remains unknown. The Holmes model of the actin filament was published 15 years ago, and although it has been widely accepted, no high-resolution structural data have yet confirmed its veracity. Here, we review the implications of recently determined structures of F-actin-binding proteins for the structure of the actin filament and suggest a series of in silico tests for actin-filament models. We also review the significance of these structures for the arp2/3-mediated branched filament.},
	keywords = {actin filament, ACTIN-FILAMENT, ACTIVATION, ALDRICH-SYNDROME PROTEIN, arp2/3, ARP2/3 COMPLEX, BETA-ACTIN, CRYSTAL-STRUCTURE, DOMAIN, gelsolin, STRUCTURAL BASIS, STRUCTURE, WASp, WH2},
	isbn = {1469-221X},
	url = {<Go to ISI>://000227297000009},
	author = {Aguda, A. H. and Burtnick, L. D. and Robinson, R. C.}
}
@article {1198,
	title = {Strongylophorine-26, a Rho-dependent inhibitor of tumor cell invasion that reduces actin stress fibers and induces nonpolarized lamellipodial extensions},
	journal = {Molecular Cancer Therapeutics},
	volume = {4},
	number = {5},
	year = {2005},
	note = {ISI Document Delivery No.: 926DETimes Cited: 6Cited Reference Count: 37},
	month = {May},
	pages = {772-778},
	type = {Article},
	abstract = {Strongylophorine-26, a new meroditerpenoid, was recently identified as an inhibitor of cancer cell invasion. This study was undertaken to characterize its mechanism of action. We find that strongylophorine-26 inhibits the motility of MDA-MB-231 breast carcinoma cells on a plastic surface. Upon addition of strongylophorine-26, rapid cell contraction and depolarization occurred, followed by spreading and flattening of the entire cell. Treated cells exhibited increased membrane ruffling throughout and extended lamellipodia in all directions. Strongylophorine-26 induced a decrease in actin stress fibers, a dramatic increase in the size and number of focal adhesions, and the appearance of a dense meshwork of actin filaments around the cell periphery. Strongylophorine-26 caused a transient activation of the small GTPase Rho and treatment with the Rho inhibitor C3 exoenzyme abrogated the anti-invasive activity of strongylophorine-26. These effects are distinct from those of many motility and angiogenesis inhibitors that seem to act by a common mechanism involving the induction of actin stress fibers. This difference in mechanism of action sets strongylophorine-26 apart as an experimental anticancer agent and indicates that pharmacologic inhibition of cell migration may be achieved by mechanisms not involving the stabilization of actin stress fibers.},
	keywords = {ACTIVATION, ANGIOGENESIS, CYTOSKELETON, FAMILY, FOCAL ADHESIONS, KINASE, MIGRATION, MOTILITY, PROTEIN, SMALL GTPASE},
	isbn = {1535-7163},
	url = {<Go to ISI>://000229102300009},
	author = {McHardy, L. M. and Warabi, K. and Andersen, R. J. and Roskelley, C. D. and Roberge, M.}
}
@article {947,
	title = {Carbon-nitrogen bond formation via the reaction of terminal alkynes with a dinuclear side-on dinitrogen complex},
	journal = {Journal of the American Chemical Society},
	volume = {126},
	number = {31},
	year = {2004},
	note = {ISI Document Delivery No.: 843TSTimes Cited: 27Cited Reference Count: 21},
	month = {Aug},
	pages = {9480-9481},
	type = {Article},
	keywords = {ACTIVATION, COORDINATION, FIXATION, FUNCTIONALIZATION, HETEROCYCLES, HYDROAMINATION, METAL-COMPLEXES, MOLECULAR NITROGEN, MOLYBDENUM, N-2},
	isbn = {0002-7863},
	url = {<Go to ISI>://000223110100007},
	author = {Morello, L. and Love, J. B. and Patrick, B. O. and Fryzuk,Michael D.}
}
@article {896,
	title = {Inhibition of Chk1 by the G(2) DNA damage checkpoint inhibitor isogranulatimide},
	journal = {Molecular Cancer Therapeutics},
	volume = {3},
	number = {10},
	year = {2004},
	note = {ISI Document Delivery No.: 862KBTimes Cited: 40Cited Reference Count: 40},
	month = {Oct},
	pages = {1221-1227},
	type = {Article},
	abstract = {Inhibitors of the G(2) DNA damage checkpoint can selectively sensitize cancer cells with mutated p53 to killing by DNA-damaging agents. Isogranulatimide is a G2 checkpoint inhibitor containing a unique indole/maleimide/ imidazole skeleton identified in a phenotypic cell-based screen; however, the mechanism of action of isogranulatimide is unknown. Using natural and synthetic isogranulatimide analogues, we show that the imide nitrogen and a basic nitrogen at position 14 or 15 in the imidazole ring are important for checkpoint inhibition. Isogranulatimide shows structural resemblance to the aglycon of UCN-01, a potent bisindolemaleimide inhibitor of protein kinase Cbeta (IC50, 0.001 mumol/L) and of the checkpoint kinase Chk1 (IC50, 0.007 mumol/L). In vitro kinase assays show that isogranulatimide inhibits Chk1 (IC50, 0.1 mumol/L) but not protein kinase Cbeta. Of 13 additional protein kinases tested, isogranulatimide significantly inhibits only glycogen synthase kinase-3beta (IC50, 0.5 mumol/L). We determined the crystal structure of the Chk1 catalytic domain complexed with isogranulatimicle. Like UCN-01, isogranulatimide binds in the ATP-binding pocket of Chk1 and hydrogen bonds with the backbone carbonyl oxygen of Glu(85) and the amide nitrogen Of Cys(87). Unlike UCN-01, the basic N15 of isogranulatimide interacts with Glu(17), causing a conformation change in the kinase glycine-rich loop that may contribute importantly to inhibition. The mechanism by which isogranulatimide inhibits Chk1 and its favorable kinase selectivity profile make it a promising candidate for modulating checkpoint responses in tumors for therapeutic benefit.},
	keywords = {7-HYDROXYSTAUROSPORINE UCN-01, ACTIVATION, CANCER, CELL-CYCLE, DEPENDENT PROTEIN-KINASE, IDENTIFICATION, MECHANISMS, PHOSPHORYLATION, SPECIFICITY, SUBSTRATE},
	isbn = {1535-7163},
	url = {<Go to ISI>://000224488400006},
	author = {Jiang, X. X. and Zhao, B. G. and Britton, R. and Lim, L. Y. and Leong, D. and Sanghera, J. S. and Zhou, B. B. S. and Piers, E. and Andersen, R. J. and Roberge, M.}
}
@article {994,
	title = {Spectroscopic properties and quantum chemistry-based normal coordinate analysis (QCB-NCA) of a dinuclear tantalum complex exhibiting the novel side-on end-on bridging geometry of N-2: Correlations to electronic structure and reactivity},
	journal = {Journal of the American Chemical Society},
	volume = {126},
	number = {1},
	year = {2004},
	note = {ISI Document Delivery No.: 761ZMTimes Cited: 16Cited Reference Count: 40},
	month = {Jan},
	pages = {280-290},
	type = {Article},
	abstract = {The vibrational properties and the electronic structure of the side-on end-on N-2-bridged Ta complex ([NPN]Ta(mu-H))(2)(mu-eta(1):eta(2)-N-2) (1) (where [NPN] = (PhNSiMe2CH2)(2)PPh) are analyzed. Vibrational characterization of the Ta-2(mu-N-2)(mu-H)(2) core is based on resonance Raman and infrared spectroscopies evaluated with a novel quantum chemistry-based normal coordinate analysis (QCB-NCA). The N-N stretching frequency is found at 1165 cm(-1) exhibiting a N-15(2) isotope shift of -37 cm(-1). Four other modes of the Ta2N2H2 core are observed between 430 and 660 cm(-1). Two vibrations of the bridging hydrido ligands are also identified in the spectra. On the basis of experimental frequencies and the QCB-NCA procedure, the N-N force constant is determined to be 2.430 mdyn -Angstrom(-1). The Ta-N force constants are calculated to be 2.517 mdyn Angstrom(-1) for the Ta-eta(1)-N-2 bond and 1.291 and 0.917 mdyn Angstrom(-1) for the Ta-eta(2)-N-2 bonds, respectively. DFT calculations on 1 suggest that the bridging dinitrogen ligand carries a charge of -1.1, which is equally distributed over the two nitrogen atoms. However, orbital analysis reveals that the terminal nitrogen makes lower contributions to the pi orbitals and much higher contributions to the pi* orbitals of the N-2 ligand than the bridging nitrogen. This suggests that reactions of the dinitrogen ligand with electrophiles should preferentially occur at the terminal N atom, in agreement with experimental results.},
	keywords = {ACTIVATION, CLEAVAGE, DINITROGEN FIXATION, EFFECTIVE CORE POTENTIALS, FUNCTIONALIZATION, LIGAND, MOLECULAR CALCULATIONS, MOLYBDENUM, NITROGEN-FIXATION, REDUCTION PATHWAY},
	isbn = {0002-7863},
	url = {<Go to ISI>://000187945400064},
	author = {Studt, F. and MacKay, B. A. and Fryzuk,Michael D. and Tuczek, F.}
}
@article {617,
	title = {Dinuclear organometallic dinitrogen complexes of niobium},
	journal = {Inorganica Chimica Acta},
	volume = {345},
	year = {2003},
	note = {ISI Document Delivery No.: 653EUTimes Cited: 4Cited Reference Count: 30},
	month = {Mar},
	pages = {53-62},
	type = {Article},
	abstract = {{The niobium(III) chloride precursors (R)[P2N2]NbCl stabilized by the bis-(amidophosphine) macrocycle (where (R)[P2N2] RP(CH2SiMe2NSiMe2CH2)(2)PR},
	keywords = {ACTIVATION, amidophosphine ligands, AZOBENZENE, CLEAVAGE, CRYSTAL-STRUCTURE, CRYSTALLOGRAPHY, DINITROGEN COMPLEXES, END-ON, FIXATION, fluxionality, macrocycle, macrocycles, N-2, NIOBIUM, NITRIDE, SIDE-ON},
	isbn = {0020-1693},
	url = {<Go to ISI>://000181422900008},
	author = {Fryzuk,Michael D. and Kozak, C. M. and Patrick, B. O.}
}
@article {609,
	title = {Interaction of rhodium(I) bisphosphine complexes with semicarbazones to give orthometallated rhodium(III) complexes},
	journal = {Russian Chemical Bulletin},
	volume = {52},
	number = {12},
	year = {2003},
	note = {ISI Document Delivery No.: 809IUTimes Cited: 7Cited Reference Count: 57International Memorial Symposium on Modern Trends in Organometallic and Catalytic Chemistry Dedicated to Mark Vol{\textquoteright}pinMAY 18-AUG 23, 2003Moscow, RUSSIA},
	month = {Dec},
	pages = {2707-2714},
	type = {Proceedings Paper},
	abstract = {Interaction of the cis-[Rh(PR3)(2)(Solv)(2)]PF6 complexes (R = Ar or R-3 = Ph2Me, Solv solvent) under Ar with semicarbazones bearing a phenyl group on the imine-C atom gives the rhodium(III)-hydrido-bis(phosphine)-orthometallated semicarbazone species [RhH(PR3)(2){(o-C6H4(R{\textquoteright})C=N-N(H)CONH2}]PF6 (R{\textquoteright} = Me or Et), which are characterized generally by elemental analysis, P-31{H-1} and H-1 NMR spectroscopy, and mass-spectrometry. The PPh3-containing complex with R{\textquoteright} = Me, structurally characterized by X-ray analysis, reveals coordination of the semicarbazone by the ortho-C atom, the imine-N atom, and the amide-carbonyl group. For a semicarbazone containing no Ph group, the rhodium(I) complex [Rh(PR3)(2)(Et(Me)C=N-N(H)CONH2)]PF6, containing the eta(2)-semicarbazone bonded via the imine-N and carbonyl, is formed. Attempts to hydrogenate the C=N moiety in the complexes or to catalytically hydrogenate the semicarbazones were unsuccessful.},
	keywords = {ACTIVATION, ASYMMETRIC HYDROGENATION, BENZALDEHYDE SEMICARBAZONE, C-H, C-H BONDS, CATALYTIC-HYDROGENATION, COMPLEXES, CRYSTAL-STRUCTURE, FINE CHEMICALS, INTRAMOLECULAR ACTIVATION, molecular structure, orthometallation, phosphines, rhodium, SELECTIVE HYDROGENATION, semicarbazones, SYNTHESIS, TRANSITION-METAL-COMPLEXES, UNPRECEDENTED CHEMICAL TRANSFORMATION},
	isbn = {1066-5285},
	url = {<Go to ISI>://000220631200019},
	author = {Ezhova, M. B. and Patrick, B. O. and James, Brian R. and Ford, M. E. and Waller, E. J.}
}
@article {348,
	title = {The calcium activation of gelsolin: Insights from the 3 angstrom structure of the G4-G6/actin complex},
	journal = {Journal of Molecular Biology},
	volume = {324},
	number = {4},
	year = {2002},
	note = {ISI Document Delivery No.: 625PRTimes Cited: 48Cited Reference Count: 32},
	month = {Dec},
	pages = {691-702},
	type = {Article},
	abstract = {Gelsolin participates in the reorganization of the actin cytoskeleton that is required during such phenomena as cell movement, cytokinesis, and apoptosis. It consists of six structurally similar domains, G1-G6, which are arranged at resting intracellular levels of calcium ion so as to obscure the three actin-binding surfaces. Elevation of Ca2+ concentrations releases latches within the constrained structure and produces large shifts in the relative positioning of the domains, permitting gelsolin to bind to and sever actin filaments. How Ca2+ is able to activate gelsolin has been a major question concerning the function of this protein. We present the improved structure of the C-terminal half of gelsolin bound to monomeric actin at 3.0 Angstrom resolution. Two classes of Ca2+-binding site are evident on gelsolin: type 1 sites share coordination of Ca2+ with actin, while type 2 sites are wholly contained within gelsolin. This structure of the complex reveals the locations of two novel metal ion-binding sites in domains G5 and G6, respectively. We identify both as type 2 sites. The absolute conservation of the type 2 calcium-ligating residues across the six,domains of gelsolin suggests that this site exists in each of the domains. In total, gelsolin has the potential to bind eight calcium ions, two type 1 and six type 2. The function of the type 2 sites is to facilitate structural rearrangements within gelsolin as part of the activation and actin-binding and severing processes. We propose the novel type 2 site in G6 to be the critical site that initiates overall activation of gelsolin by releasing the tail latch that locks calcium-free gelsolin in a conformation unable to bind actin. (C) 2002 Elsevier Science Ltd. All rights reserved.},
	keywords = {actin, ACTIVATION, ACTOPHORIN, BINDING DOMAIN, CA2+, calcium, CAPPING PROTEIN, F-ACTIN, FAMILIAL AMYLOIDOSIS, FINNISH TYPE, gelsolin, IDENTIFICATION, MECHANISM, PLASMA GELSOLIN, REGULATION, severing},
	isbn = {0022-2836},
	url = {<Go to ISI>://000179825300011},
	author = {Choe, H. and Burtnick, L. D. and Mejillano, M. and Yin, H. L. and Robinson, R. C. and Choe, S.}
}
@article {380,
	title = {Hydroboration of coordinated dinitrogen: A new reaction for the N-2 ligand that results in its functionalization and cleavage},
	journal = {Angewandte Chemie-International Edition},
	volume = {41},
	number = {19},
	year = {2002},
	note = {ISI Document Delivery No.: 604GZTimes Cited: 48Cited Reference Count: 30},
	pages = {3709-3712},
	type = {Article},
	keywords = {ACTIVATION, COMPLEX, DINITROGEN, END-ON, EXCHANGE, hydroboration, iron, MILD CONDITIONS, nitrides, NITROGEN, nitrogen fixation, REDUCTION, SIDE-ON, tantalum, TUNGSTEN},
	isbn = {1433-7851},
	url = {<Go to ISI>://000178609900046},
	author = {Fryzuk,Michael D. and MacKay, B. A. and Johnson, S. A. and Patrick, B. O.}
}
@article {335,
	title = {The power distribution advantage of fiber-optic coupled ultraviolet resonance Raman spectroscopy for bioanalytical and biomedical applications},
	journal = {Journal of Raman Spectroscopy},
	volume = {33},
	number = {7},
	year = {2002},
	note = {ISI Document Delivery No.: 580KBTimes Cited: 18Cited Reference Count: 51},
	month = {Jul},
	pages = {503-510},
	type = {Article},
	abstract = {Fiber-optic coupled ultraviolet resonance Raman spectroscopy (FO-UVRRS) of photosensitive biological samples is discussed in the context of both clinical and basic medical research applications. The fiberoptic probes are designed specifically for resonance Raman spectroscopy and offer a power distribution advantage over conventional focusing UVRR spectrometers that allows the use of higher power levels without increasing the risk of photo-damage. A typical fiber-optic probe using a 600 pm core diameter fiber for illumination of the sample allows an increase in power at the sample of over an order of magnitude while maintaining the same power density, and therefore the same level of safety, as a typical conventional UVRR spectrometer. This allows high-quality spectra to be easily obtained in 10 s. Spectra of representative biological samples using high power levels without damage are presented, including the study of a photosensitive enzyme-substrate system under anaerobic conditions. Copyright (C) 2002 John Wiley Sons, Ltd.},
	keywords = {ACTIVATION, AROMATIC-AMINO-ACIDS, BACTERIA, DEEP UV, ENZYMES, LASER EXCITATION, PROBE, SIMPLICITY, SPECTRA, TISSUE},
	isbn = {0377-0486},
	url = {<Go to ISI>://000177232800003},
	author = {Barbosa, C. J. and Vaillancourt, F. H. and Eltis, L. D. and Blades, M. W. and Turner, R. F. B.}
}
@article {335,
	title = {The power distribution advantage of fiber-optic coupled ultraviolet resonance Raman spectroscopy for bioanalytical and biomedical applications},
	journal = {Journal of Raman Spectroscopy},
	volume = {33},
	number = {7},
	year = {2002},
	note = {ISI Document Delivery No.: 580KBTimes Cited: 18Cited Reference Count: 51},
	month = {Jul},
	pages = {503-510},
	type = {Article},
	abstract = {Fiber-optic coupled ultraviolet resonance Raman spectroscopy (FO-UVRRS) of photosensitive biological samples is discussed in the context of both clinical and basic medical research applications. The fiberoptic probes are designed specifically for resonance Raman spectroscopy and offer a power distribution advantage over conventional focusing UVRR spectrometers that allows the use of higher power levels without increasing the risk of photo-damage. A typical fiber-optic probe using a 600 pm core diameter fiber for illumination of the sample allows an increase in power at the sample of over an order of magnitude while maintaining the same power density, and therefore the same level of safety, as a typical conventional UVRR spectrometer. This allows high-quality spectra to be easily obtained in 10 s. Spectra of representative biological samples using high power levels without damage are presented, including the study of a photosensitive enzyme-substrate system under anaerobic conditions. Copyright (C) 2002 John Wiley Sons, Ltd.},
	keywords = {ACTIVATION, AROMATIC-AMINO-ACIDS, BACTERIA, DEEP UV, ENZYMES, LASER EXCITATION, PROBE, SIMPLICITY, SPECTRA, TISSUE},
	isbn = {0377-0486},
	url = {<Go to ISI>://000177232800003},
	author = {Barbosa, C. J. and Vaillancourt, F. H. and Eltis, L. D. and Blades, M. W. and Turner, R. F. B.}
}
@article {511,
	title = {Rotational analysis of the (A)over-tilde(2)A(1)-(X)over-tilde(2)A(1) band system of yttrium dicarbide,YC2},
	journal = {Journal of Molecular Spectroscopy},
	volume = {215},
	number = {1},
	year = {2002},
	note = {ISI Document Delivery No.: 601LETimes Cited: 5Cited Reference Count: 40},
	month = {Sep},
	pages = {10-28},
	type = {Article},
	abstract = {{The 000-000 and 3(0)(1) bands of the 775-nm electronic transition of YC2 (A(2)A(1) <{\textendash}X-2 A(1)) have been studied at high resolution, using the laser-induced fluorescence from a supersonic jet expansion. Three types of experiment have been carried out. First, the complete rotational and hyperfine structures of the two bands were recorded. To Measure the small asymmetry splittings in the K = 2 levels of the X(2)A(1), state, portions of the b-type 3(0)(1) and were then recorded in the presence of a weak static electric field. Finally, a number of pure rotational transitions between the K = 0 levels of the ground state were recorded by pump/probe microwave optical double resonance. A few small rotational perturbations occur in the upper electronic state but omitting the perturbed lines, the combined data sets could be modeled using an effective Hamiltonian operator appropriate for the rotation, electron spin, and hyperfine structure of a rigid asymmetric top molecule, The molecule is confirmed as being "T-shaped." where the Y atom is bonded to the side of a C-2 group: the rotational Constants determined are for the A(2)A(1), 3(1) level},
	keywords = {ACTIVATION, C-H BOND, DOUBLE-RESONANCE, ELECTRONIC-STRUCTURE, HYPERFINE-STRUCTURE, MICROWAVE, MONOSULFIDE, SPECTROSCOPY, SPIN-ROTATION, TRANSITION-METAL ATOMS, YC2},
	isbn = {0022-2852},
	url = {<Go to ISI>://000178446800002},
	author = {Steimle, T. C. and Bousquet, R. R. and Namiki, K. C. and Merer, A. J.}
}
@article {442,
	title = {Tandem mass spectrometry of protein-protein complexes: Cytochrome c-cytochrome b(5)},
	journal = {Journal of the American Society for Mass Spectrometry},
	volume = {13},
	number = {1},
	year = {2002},
	note = {ISI Document Delivery No.: 504QXTimes Cited: 31Cited Reference Count: 53},
	month = {Jan},
	pages = {59-71},
	type = {Article},
	abstract = {An improved method to interpret triple quadrupole MS/MS experiments of complexes of large ions is presented and applied to a study of the complex formed by the proteins cytochrome c and cytochrome b(5). Modeling of the activation and dissociation process shows that most of the reaction occurs near the collision cell exit where ions have the highest internal energies. Experiments at different collision cell pressures or with different collision gases (Ne, Ar, Kr) are interpreted with a previously proposed collision model (Chen et al., Rapid Commun. Mass Spectrom. 1998, 12, 1003-1010) to calculate the internal energy added to ions to cause dissociation. Small but systematic differences under different experimental conditions are attributed to different times available for reaction. A method to correct for this is presented. Ne, Ar, and Kr are found to have similar energy transfer efficiencies. Complexes of cytochrome c and cytochrome b5 are detected in ESI mass spectra but with abundances less than expected from the solution equilibrium. Dissociation of the cytochrome c-cytochrome b(5) complexes with charge k gives as the most abundant fragments, cytochrome b(5)(+3) and cytochrome c(+(k+3)). Adding charges to the complex destabilizes it. A series of cytochrome c variants with Lys residues thought to be involved in solution binding replaced by Ala showed no differences in the energy required to induce dissociation of the gas phase complex. The implications for the binding of the gas phase ions are inconclusive. (J Am Soc Mass Spectrom 2002, 13, 59-71) ((C)) 2002 American Society for Mass Spectrometry.},
	keywords = {ACTIVATION, BINDING, COLLISION-INDUCED DISSOCIATION, CROSS-SECTIONS, ELECTROSPRAY-IONIZATION, GAS-PHASE, INTERNAL ENERGY, ION-TRAP, NONCOVALENT COMPLEXES, YEAST ISO-1-FERRICYTOCHROME-C},
	isbn = {1044-0305},
	url = {<Go to ISI>://000172868300007},
	author = {Mauk, M. R. and Mauk, A. G. and Chen, Y. L. and Douglas, D. J.}
}
@article {5189,
	title = {Collision-induced dissociation of bradykinin ions in the interface region of an ESI-MS},
	journal = {Journal of the American Society for Mass Spectrometry},
	volume = {12},
	number = {7},
	year = {2001},
	note = {ISI Document Delivery No.: 447HHTimes Cited: 17Cited Reference Count: 42},
	month = {Jul},
	pages = {772-779},
	type = {Article},
	abstract = {By applying different electric field strengths to the orifice-skimmer region of an electrospray ionization mass spectrometer, the rate of dissociation can be varied based on the amount of infernal energy acquired by an ion through collisions: with the curtain gas molecules. Both the Arrhenius equation and Rice-Ramsperger-Kassel (RRK) theory can be used to predict the rate of dissociation of internally excited molecules. A previously determined model for collision-induced dissociation is tested by comparison of predicted and experimentally observed orifice-skimmer potential differences for dissociation of ions. The rate of collision-induced dissociation of bradykinin ions is determined by monitoring the fragments produced in a mass spectrometer. The semi-quantitative model is found to yield effective predictions when accurate Arrhenius and RRK parameters are utilized. (C) 2001 American Society for Mass Spectrometry.},
	keywords = {ACTIVATION, CYTOCHROME-C, ELECTROSPRAY-IONIZATION, GAS-PHASE, IDENTIFICATION, INFRARED RADIATIVE DISSOCIATION, IONIZATION MASS-SPECTROMETRY, MOLECULES, PEPTIDES, PROTEIN IONS},
	isbn = {1044-0305},
	url = {<Go to ISI>://000169565500002},
	author = {Schneider, B. B. and Douglas, D. J. and Chen, D. D. Y.}
}
@article {4669,
	title = {A computational study of two-state conformational changes in 16-electron [CpW(NO)(L)] complexes (L = PH3, CO, CH2, HCCH, H2CCH2)},
	journal = {Chemistry-a European Journal},
	volume = {5},
	number = {5},
	year = {1999},
	note = {ISI Document Delivery No.: 194UQTimes Cited: 20Cited Reference Count: 52},
	month = {May},
	pages = {1598-1608},
	type = {Article},
	abstract = {Electronically and coordinatively unsaturated [Cp*W(NO)(L)] complexes have been postulated as intermediates in several related systems. Model [CpW(NO)(L)] compounds (L= PH3, CO, CH2, H2CCH2, HCCH) have been investigated theoretically by means of density functional theory computational techniques. The structural parameters calculated for saturated [CpW(NO)(PH,)(L)] complexes are in good agreement with the solid-state molecular structures determined crystallographically for the corresponding [Cp*W(NO)(PMe3)(L)] compounds. The 16-electron, singlet [CpW(NO)(L)] species have geometries comparable to those of the same fragment in the phosphine adducts and include a highly pyramidal conformation at W. The energy of the triplet spin state is calculated to be close to or even lower than that of the singlet state for these unsaturated compounds, and depends largely on the pi-bonding capabilities of L (Delta Es-t=Delta E-t-Delta E-s = - 3.3 kcalmol(-1) (PH3), + 2.8 (CO), + 2.4 (CH2), +6.3 (H2CCH2), -2.3 (HCCH)). The optimization of partially constrained structures in both spin states allows for a conformational analysis of the [CpW(NO)(L)] species. The inversion of the conformation of the pyramidal singlet [CpW(NO)(L)] complexes via the planar-at-W triplet species (two-state pathway) is calculated to be competitive with the equivalent process solely along the singlet spin hypersurface. Rotation of the W-CH, bond in the singlet carbene species is also found to proceed more readily via a two-state pathway. The preferred alkyne conformation, the unusually stable triplet states, and the strong W-to-L sc-donation observed in these systems may all be rationalized by the relatively high energies of the occupied orbitals of the formally WO compounds.},
	keywords = {ACTIVATION, CROSSOVER, density functional calculations, H BOND, LIGAND, ligand effects, MOLECULAR CALCULATIONS, ORGANOMETALLIC NITROSYL CHEMISTRY, OXIDATIVE ADDITION, pi interactions, PIANO-STOOL COMPLEXES, REACTIVITY, REDUCTIVE ELIMINATION, SPIN, SPIN-STATE, TUNGSTEN},
	isbn = {0947-6539},
	url = {<Go to ISI>://000080212600026},
	author = {Smith, K. M. and Poli, R. and Legzdins,Peter}
}
@article {4245,
	title = {Applications of collision dynamics in quadrupole mass spectrometry},
	journal = {Journal of the American Society for Mass Spectrometry},
	volume = {9},
	number = {2},
	year = {1998},
	note = {ISI Document Delivery No.: YT841Times Cited: 50Cited Reference Count: 44},
	month = {Feb},
	pages = {101-113},
	type = {Article},
	abstract = {Some applications of collision dynamics in the field of quadrupole mass spectrometry are presented. Previous data on the collision induced dissociation of ions in triple quadrupole mass spectrometers is reviewed. A new method to calculate the internal energy distribution of activated ions directly from the increase in the cross section for dissociation with center of mass energy is presented. This method, although approximate, demonstrates explicitly the high efficiency of transfer of translational to internal energy of organic ions. It is argued that at eV center of mass energies, collisions between protein ions and neutrals such as Ar are expected to be highly inelastic. The discovery and application of collisional cooling in radio frequency quadrupoles is reviewed. Some previously unpresented data on fragment ion energies in triple quadrupole tandem mass spectrometry are shown that demonstrate directly the loss of kinetic energy of fragment ions in the cooling process. The development of the energy loss method to measure collision cross sections of protein ions in triple quadrupole instruments is reviewed along with a new discussion of the effects of inelastic collisions in these experiments and related ion mobility experiments. (C) 1998 American Society for Mass Spectrometry.},
	keywords = {ACTIVATION, BOND-ENERGIES, GAS-PHASE, INDUCED DISSOCIATION, ION FRAGMENTATION, IONS, MECHANISM, MOLECULES, POLYATOMIC, SIZE, TRIPLE QUADRUPOLE},
	isbn = {1044-0305},
	url = {<Go to ISI>://000071650400001},
	author = {Douglas, D. J.}
}
@article {4325,
	title = {Ligand elaboration mediated by a Cp*W(NO) template: Stepwise incorporation of small molecules into a tungsten vinyl fragment},
	journal = {Organometallics},
	volume = {17},
	number = {5},
	year = {1998},
	note = {ISI Document Delivery No.: ZC012Times Cited: 21Cited Reference Count: 81},
	month = {Mar},
	pages = {854-871},
	type = {Article},
	abstract = {{Thermolysis of the alkyl vinyl complex Cp*W(NO)(CH2SiMe3)(CPh=CH2) (1) in the presence of unsaturated, heteroatom-containing compounds such as esters and nitriles quantitatively affords metallacyclic products of reductive coupling. These are trapped as 18e complexes via either intramolecular rearrangement or intermolecular reaction with added trapping reagents. The nature of these metallacycles is consistent with the intermediacy of the acetylene complex Cp*W(NO)(eta(2)-CPh=CH) (A) derived in situ from the reductive elimination of SiMe4 from 1. With esters ROAc (R = Me, Et), reductive coupling and C-O bond cleavage yields the alkoxide-containing oxametallacyclopentadiene complexes Cp*W-(No)(eta(2)-O=C(Me)CH=CPh)(OR) (2},
	keywords = {ACTIVATION, ALKYNE COMPLEXES, BOND-CLEAVAGE, C-H, INSERTION, KETONE COMPLEXES, METAL-COMPLEXES, ORGANIC-SYNTHESIS, ORGANOMETALLIC NITROSYL CHEMISTRY, RAY CRYSTAL-STRUCTURE, SEQUENTIAL, ZIRCONOCENE COMPLEXES},
	isbn = {0276-7333},
	url = {<Go to ISI>://000072530700014},
	author = {Legzdins,Peter and Lumb, S. A. and Young, V. G.}
}
@article {3961,
	title = {Chiral and achiral diphosphine complexes of ruthenium(II) incorporating labile nitrile ligands: Synthesis and solution chemistry of mono- and dinuclear derivatives of Ru2Cl4(PP)(2) (PP equals chelating diphosphine)},
	journal = {Inorganic Chemistry},
	volume = {36},
	number = {9},
	year = {1997},
	note = {ISI Document Delivery No.: WW128Times Cited: 25Cited Reference Count: 36},
	month = {Apr},
	pages = {1961-1966},
	type = {Article},
	abstract = {A family of nitrile complexes has been prepared by reaction of Ru2Cl4(PP)(2) Or RuCl2(PP)(PPh3) (PP = Ph2P(CH2)(4)PPh2 (dppb), Ph2PCH2CHOCMe2OCHCH2PPh2 (diop), 2,2{\textquoteright}-bis(diphenylphosphino)-1, 1{\textquoteright}-binaphthyl (binap)) with MeCN or PhCN, the product formed depending strongly on the reaction conditions. At high nitrile concentrations, the principal species present is RuCl(PP)(RCN)(3)X-+(-) (X = Cl); the cation can generally be isolated (as the PF6 salt) by abstraction of the chloride counterion with NH4PF6. Use of 2 equiv of NH4PF6 generates Ru(PP)(RCN)(4)(2+)(PF6-)(2) (PP = dppb). In the absence of a halide-abstracting agent, addition of hexanes or diethyl ether precipitates neutral RuCl2(PP)(RCN)(2) species, which undergo further loss of nitrile in the solid state (R = Me) or in solution (R = Me, Ph). Redissolution of the neutral species in chlorocarbon solvents gives Ru2Cl3(PP)(2)(RCN)(2)X-+(-) (X = Cl) and, in benzene, Ru2Cl4(PP)(2)(RCN). The dinuclear cation (X = PF6) is also accessible by reaction of RuCl(PP)(RCN)(3)+PF6- with CH2Cl2 or CDCl3, while the mononitrile can be obtained directly by reaction of Ru2Cl4(PP)(2) or RuCl2(PP)(PPh3) with small amounts of nitrile in benzene.},
	keywords = {ACTIVATION, ACTIVITY, CARBOXYLIC-ACIDS, CATALYTIC, DICHLOROMETHANE, DIHYDROGEN, DITERTIARY-PHOSPHINE COMPLEXES, GENERATION, HYDROGENATION, OXIDATIVE-ADDITION-REACTIONS, SOLVENT},
	isbn = {0020-1669},
	url = {<Go to ISI>://A1997WW12800034},
	author = {Fogg, D. E. and James, Brian R.}
}
@article {4138,
	title = {Optical detection of yttrium dicarbide, a {\textquoteright}{\textquoteright}T-shaped{\textquoteright}{\textquoteright} molecule},
	journal = {Journal of Chemical Physics},
	volume = {106},
	number = {6},
	year = {1997},
	note = {ISI Document Delivery No.: WG307Times Cited: 13Cited Reference Count: 28},
	month = {Feb},
	pages = {2060-2066},
	type = {Article},
	abstract = {The yttrium dicarbide molecule, YC2, has been identified in the reactions of laser-ablated yttrium with methane and other small hydrocarbons under supersonic jet-cooled expansion conditions. A parallel-polarized electronic band system with origin at 12889.5 cm(-1) has been tentatively identified as an A(1)-<(X)over tilde (2)A(1)> transition of a {\textquoteright}{\textquoteright}T-shaped{\textquoteright}{\textquoteright} isomer where the Y atom is bonded to the side of a C-2 molecule. Weak vibronically induced perpendicular bands, representing Delta upsilon(3)=odd transitions, are also present. Extensive vibrational progressions in the excitation and the resolved fluorescence spectra have been analyzed to give the two lowest vibrational frequencies of the two electronic states: (X) over tilde (2)A(1), nu(2) (a(1))=561.1(+/-2.8 cm(-1)), nu(3) (b(2))=369.6 (+/-1.7 cm(-1)); excited A(1), nu(2)=494.5(+/-5.0 cm(-1)), nu(3)=331.6(+/-2.2 cm(-1)). No bands involving the C-C stretching vibration (nu(1),a(1)) have been found. The frequency of the vibration in the ground state indicates that the barrier to internal rotation of the C-2 group against the Y atom is quite high, but large anharmonic coupling between the nu(2) and nu(3) vibrations suggests that internal rotation is facilitated by excitation of the Y-C-2 stretohing vibration. (C) 1997 American lnstitute of Physics.},
	keywords = {ACTIVATION, C-C BONDS, CLUSTERS, HYDROCARBONS, JET-COOLED SIC2, SPECTROSCOPY, TRANSITION-METAL ATOMS, YC2},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1997WG30700002},
	author = {Steimle, T. C. and Marr, A. J. and Xin, J. and Merer, A. J. and Athanassenas, K. and Gillet, D.}
}
@article {4079,
	title = {Synthesis and X-ray structure of an H2S complex, RuCl2(P-N)(P(p-tolyl)(3))(SH2) (P-N=o-(diphenylphosphino)-N,N-dimethylaniline)},
	journal = {Inorganic Chemistry},
	volume = {36},
	number = {24},
	year = {1997},
	note = {ISI Document Delivery No.: YH560Times Cited: 24Cited Reference Count: 25},
	month = {Nov},
	pages = {5426-\&},
	type = {Article},
	abstract = {The interaction of transition metal complexes with H2S continues to attract attention. Such chemistry is of relevance in the biological sulfur cycle, in the formation of ores, in hydrodesulfurization catalysis, and in the use of H2S as a source of Hz and elemental sulfur (or organosulfur compounds). Literature dealing with these topics is plentiful and can be traced through recent references.(1,2) However, isolation and characterization of metal complexes containing H2S remain challenging,(2,3) as such species tend to undergo oxidative addition reactions to give products with SH ligands or bridged or terminal sulfide,(4) and only recently has an H2S complex been characterized crystallographically.(2) This was the structure reported by Sellmann et al. of the Ru(II)-complex Ru(SH2)(PPh3)({\textquoteright}S-4{\textquoteright}). THF ({\textquoteright}S-4{\textquoteright} = 1,2-bis[(2-mercaptophenyl)thio]ethane(2-)) formed by the reaction of the polymeric complex [Ru(PPh3)({\textquoteright}S-4{\textquoteright})](x) with liquid H2S at -70 degrees C; the reaction with H2S gas at room temperature in THF resulted in a mixture of the bridging sulfide complex [(mu-S-2){Ru(PPh3)({\textquoteright}S-4{\textquoteright})}(2)] and other uncharacterized products depicting the more typical reactivity of H2S with transition metal complexes.(2)},
	keywords = {ACTIVATION, hydride, HYDROGEN, LEWIS-ACIDS, MERCAPTO, REACTIVITY, S-H, sulfide, SULFUR-CONTAINING LIGANDS, TRANSITION-METAL COMPLEXES},
	isbn = {0020-1669},
	url = {<Go to ISI>://A1997YH56000003},
	author = {Mudalige, D. C. and Ma, E. S. and Rettig, S. J. and James, Brian R. and Cullen, W. R.}
}
@article {3918,
	title = {Unusual ligand-induced reductive elimination in Cp*W(NO)(H)[eta(2)-PPh(2)C(6)H(4)]: A route to the extremely strong pi-donor fragment Cp*W(NO)(PPh(3))},
	journal = {Journal of the American Chemical Society},
	volume = {119},
	number = {5},
	year = {1997},
	note = {ISI Document Delivery No.: WG232Times Cited: 25Cited Reference Count: 39},
	month = {Feb},
	pages = {1139-1140},
	type = {Article},
	keywords = {ACTIVATION, ALKYL, CARBON HYDROGEN-BONDS, COMPLEXES, hydride, ISOCYANIDE, MECHANISM, REACTIVITY, rhenium, TUNGSTEN},
	isbn = {0002-7863},
	url = {<Go to ISI>://A1997WG23200042},
	author = {Burkey, D. J. and Debad, J. D. and Legzdins,Peter}
}
@article {3320,
	title = {NET AMINE DEALKYLATION AT A DIRUTHENIUM CENTER - DEHYDROGENATION OF A SECONDARY AMINE AND HYDROLYSIS OF A COORDINATED IMINE},
	journal = {Inorganic Chemistry},
	volume = {34},
	number = {10},
	year = {1995},
	note = {ISI Document Delivery No.: QX706Times Cited: 26Cited Reference Count: 36},
	month = {May},
	pages = {2557-2561},
	type = {Article},
	abstract = {Reaction of excess benzylamine with Ru2Cl4(dppb)(2) (1) or RuCl2(dppb)(PPh(3)) (2) under Ar or with Ru2Cl5(dppb)(2) (3) under H-2 or in air generates RuCl2(dppb)(NH(2)CH(2)Ph)(2) [dppb = 1,4-bis(diphenylphosphino)butane, Ph(2)P(CH2)(4)PPh(2)]. Use of 1 equiv of amine per [Ru(II)](2) gives dinuclear Ru2Cl4(dppb)(2)(NH(2)CH(2)Ph) (4a) as a mixture of isomers. The corresponding reactions with dibenzylamine yield only dinuclear products: either Ru2Cl4(dppb)(2)[NH(CH(2)Ph)(2)] (4b), for reactions under H-2, or a mixture of this species and the dealkylation product 4a. The mechanism proposed for formation of the latter involves dehydrogenation of the secondary amine adduct to Ru2Cl4(dppb)(2)[PhCH(2)N=C(H)Ph], followed by hydrolysis of the coordinated imine. Direct reaction of PhCH(2)N=C(H)Ph with 3 under H-2 permits isolation of solely 4b. The findings are of interest also in context of thermal degradation of tertiary amines and hydrogenation of imines catalyzed by Ru ditertiary phosphine complexes.},
	keywords = {ACTIVATION, CATALYSTS, COMPLEXES, CONVERSION, CRYSTAL-STRUCTURE, DIHYDROGEN, PHOSPHINE COMPLEXES, PORPHYRIN, REACTIVITY, ruthenium complexes, TERTIARY-AMINES},
	isbn = {0020-1669},
	url = {<Go to ISI>://A1995QX70600012},
	author = {Fogg, D. E. and James, Brian R.}
}
@article {3419,
	title = {NITROSYL N-O BOND-CLEAVAGE DURING REACTIONS OF ORGANOMETALLIC NITROSYL COMPLEXES OF THE GROUP-6 ELEMENTS},
	journal = {Comments on Inorganic Chemistry},
	volume = {17},
	number = {4},
	year = {1995},
	note = {ISI Document Delivery No.: RH843Times Cited: 11Cited Reference Count: 44Part A},
	pages = {239-254},
	type = {Article},
	abstract = {The nitrosyl ligands in organotransition-metal nitrosyl complexes usually stay intact during chemical transformations of these complexes. However, our continuing study of the characteristic reactivity of Group 6 organometallic nitrosyl complexes has recently revealed a number of new product complexes which result from N-O bond cleavage of the nitrosyl groups in the reactants. The various reactions and reaction conditions during which these complexes undergo facile nitrosyl N-O bond dissociation are summarized, and mechanistic ideas as to why these bond cleavages occur are also presented.},
	keywords = {(ETA-5-C5ME5)RU(NO), ACTIVATION, COORDINATED NITRIC-OXIDE, COORDINATIVELY UNSATURATED BRIDGING, GAS-PHASE, GROUP 6, LIGANDS, MIGRATORY INSERTION, MOLYBDENUM, NITROSYL, NITROSYL BOND CLEAVAGE, OXIDATIVE ADDITION-REACTIONS, OXO COMPLEXES, TUNGSTEN},
	isbn = {0260-3594},
	url = {<Go to ISI>://A1995RH84300003},
	author = {Legzdins,Peter and Young, M. A.}
}
@article {2801,
	title = {END-ON VERSUS SIDE-ON BONDING OF DINITROGEN TO DINUCLEAR EARLY TRANSITION-METAL COMPLEXES},
	journal = {Journal of the American Chemical Society},
	volume = {115},
	number = {7},
	year = {1993},
	note = {ISI Document Delivery No.: KW980Times Cited: 72Cited Reference Count: 55},
	month = {Apr},
	pages = {2782-2792},
	type = {Article},
	abstract = {{The preparation of a series of dinuclear complexes of zirconium and tantalum is presented in an effort to determine factors involved in the coordination mode of the bridging dinitrogen ligand. Reduction of ZrCl3[N(SiMe2-CH2PR2)2] (R = Pr(i) and B(t)) with Na/Hg under N2 generate the corresponding dinitrogen complexes {[(R2PCH2-SiMe2)2 SiMe2)2N]ZrCl}2(mu-eta2:eta2-N2); the X-ray crystal structure of the dark blue derivative having R = Pr(i) shows that the dinitrogen unit is bridging in a planar side-on bonding mode. The N-N bond distance is 1.548(7) angstrom, which is the longest such distance for any dinitrogen complex reported. Molecular orbital calculations on this molecule indicate that the N2 unit bonds in a side-on fashion due to the unavailability of one of the d orbitals on each zirconium that would normally be involved in a pi-bond with the antibonding pi*-orbitals of the N2 moiety. This particular zirconium d orbital is unavailable due to the ancillary tridentate ligand which positions the amide donor (and the chloride) to overlap effectively with this d orbital. The results of this MO study also show that the HOMO has delta-symmetry. When the related derivative Zr(eta5-C5H5)Cl2[N(SiMe2CH2PPri2)2] is reduced under N2, the corresponding dinuclear derivative {[(Pri2PCH2SiMe2)2N]Zr(eta5-C5H5)}2(mu-eta1:eta1-N2) has the bridging dinitrogen unit end-on. In this case, the MO analysis shows that the cyclopentadienyl ligand overlaps with that zirconium d orbital which could form the delta-molecular orbital of the side-on mode; as a result, the end-on form is generated. A similar argument can be used to rationalize the end-on binding mode of the dinitrogen unit in the related tantalum derivatives {[(Pri2PCH2SiMe2)2N]Ta=CHR}2(mu-eta1:eta1-N2) (R = Bu(t), Ph), since now the alkylidene unit effectively overlaps with the same d orbital Crystals of {[(Pri2PCH2-SiMe2)2N]ZrCl}(mu-eta2:eta2-N2)-CH3C6H5 are monoclinic},
	keywords = {ACTIVATION, CARBON BONDS, CHEMISTRY, MOLECULAR-STRUCTURE, N-2 LIGAND, NITROGEN-FIXATION, PHOSPHINE COMPLEXES, RAY CRYSTAL-STRUCTURE, TANTALUM COMPLEXES, X-RAY},
	isbn = {0002-7863},
	url = {<Go to ISI>://A1993KW98000028},
	author = {Fryzuk,Michael D. and Haddad, T. S. and Mylvaganam, M. and McConville, D. H. and Rettig, S. J.}
}
@article {2940,
	title = {GLUCOSE-LOWERING EFFECTS OF A NEW ORGANIC VANADIUM COMPLEX, BIS(MALTOLATO)OXOVANADIUM(IV)},
	journal = {Canadian Journal of Physiology and Pharmacology},
	volume = {71},
	number = {3-4},
	year = {1993},
	note = {ISI Document Delivery No.: LN775Times Cited: 84Cited Reference Count: 39},
	month = {Mar-Apr},
	pages = {263-269},
	type = {Article},
	abstract = {Inorganic vanadium has been shown, both in vivo and in vitro, to have insulin-mimetic properties. A new organic vanadium complex, bis(maltolato)oxovanadium(IV) (BMOV), was developed to increase the absorption of vanadium from the gastrointestinal tract, thereby reducing the dose of vanadium necessary to produce glucose-lowering effects. BMOV was administered in the drinking water for 25 weeks to control and streptozotocin-induced diabetic, male Wistar rats. BMOV treatment produced a stable euglycemic state in 70\% of diabetic treated animals. The other 30\% of the diabetic treated animals demonstrated fluctuations in glucose control over the entire study period. The initial effective dose of BMOV was 0.45 mmol/kg, which decreased to an effective maintenance dose of 0. 18 mmol/kg, significantly lower than the dose of inorganic vanadium salts used in previous studies. BMOV treatment did significantly reduce fluid consumption levels in control treated animals after 10 weeks of therapy; however, the food consumption for control treated animals was only intermittently lower than that for controls. Plasma cholesterol and triglyceride levels were normalized with BMOV treatment for all diabetic treated animals, without a concomitant increase in plasma insulin levels. An oral glucose tolerance test demonstrated that glucose homeostasis in control-treated animals occurred at significantly lower plasma insulin levels than in control animals. BMOV effectively produced the glucose-lowering effects at significantly lower dose than previously used for inorganic vanadium salts, without any overt signs of toxicity.},
	keywords = {ACTIVATION, ADIPOCYTES, BIS(MALTOLATO)OXOVANADIUM(IV), BLOOD-GLUCOSE, DIABETES TREATMENT, DIABETIC RATS, GLYCOLYSIS, INSULIN, SENSITIVITY, SKELETAL-MUSCLE, STIMULATION, streptozotocin-induced diabetes, VANADATE},
	isbn = {0008-4212},
	url = {<Go to ISI>://A1993LN77500013},
	author = {Yuen, V. G. and Orvig, Chris and McNeill, J. H.}
}
@article {2941,
	title = {IMPROVEMENT IN CARDIAC DYSFUNCTION IN STREPTOZOTOCIN-INDUCED DIABETIC RATS FOLLOWING CHRONIC ORAL-ADMINISTRATION OF BIS(MALTOLATO)OXOVANADIUM(IV)},
	journal = {Canadian Journal of Physiology and Pharmacology},
	volume = {71},
	number = {3-4},
	year = {1993},
	note = {ISI Document Delivery No.: LN775Times Cited: 70Cited Reference Count: 40},
	month = {Mar-Apr},
	pages = {270-276},
	type = {Article},
	abstract = {Decreased cardiac function in streptozotocin-diabetic rats has been used as a model of diabetes-induced cardiomyopathy, which is a secondary complication in diabetic patients. The present study was designed to evaluate the therapeutic effect of a new organic vanadium complex, bis(maltolato)oxovanadium(IV), (BMOV), in improving heart function in streptozotocin-diabetic rats. There were four groups of male, Wistar rats: control (C), control treated (CT), diabetic (D), and diabetic treated (DT). Treatment consisted of BMOV, 0.5 mg/mL (1.8 mM) for the first 3 weeks and 0.75 mg/mL (2.4 mM) for the next 22 weeks, in the drinking water of rats allowed ad libitum access to food and water. BMOV lowered blood glucose to < 9 mM in 70\% of DT animals without any increase in plasma insulin levels, and mean blood glucose and plasma lipid levels were significantly lower in DT vs. D rats. Tissue vanadium levels were measured in plasma, bone, kidney, liver, muscle, and fat of BMOV-treated rats. Plasma vanadium levels averaged 0.84 +/- 0.07 mug/mL (16.8 muM) in CT rats and 0.76 +/-0.05 mug/mL (15.2 muM) in DT animals. The highest vanadium levels at termination of this chronic feeding study were in bone, 18.3 +/- 3.0 mug/g (0.37 mumol/g) in CT and 26.4 +/- 2.6 mug/g (0.53 mumol/g) in DT rats, with intermediate levels in kidney and liver, and low, but detectable levels in muscle and fat. There were no deaths in either the CT or DT group, and no overt signs of vanadium toxicity were present. Tissue vanadium levels were not correlated with die glucose-lowering effect. Isolated working heart parameters of left ventricular developed pressure (LVDP) and rate of pressure development (+dP/dT, and -dP/dT) indicated that BMOV treatment resulted in significant correction of the heart dysfunction associated with streptozotocin-induced diabetes in rat.},
	keywords = {ACTIVATION, BIS(MALTOLATO)OXOVANADIUM(IV), BLOOD-GLUCOSE, diabetes, GLUCOSE-HOMEOSTASIS, INSULIN, MYOCARDIAL DYSFUNCTION, STREPTOZOTOCIN, SULFATE, VANADATE TREATMENT, VANADIUM},
	isbn = {0008-4212},
	url = {<Go to ISI>://A1993LN77500014},
	author = {Yuen, V. G. and Orvig, Chris and Thompson, K. H. and McNeill, J. H.}
}
@article {7302,
	title = {ORGANOMETALLIC OXO CHEMISTRY .4. REACTIVITY OF CP-ASTERISK-W(O)2(CH2SIME3) TOWARD PARA-TOLYL ISOCYANATE - CYCLOADDITION REACTIONS OF TUNGSTEN-OXO AND TUNGSTEN-IMIDO LINKAGES},
	journal = {Organometallics},
	volume = {11},
	number = {9},
	year = {1992},
	note = {ISI Document Delivery No.: JN066Times Cited: 50Cited Reference Count: 40},
	month = {Sep},
	pages = {3104-3110},
	type = {Article},
	abstract = {{Treatment of CP*W(O)2(CH2SiMe3) with p-tolyl isocyanate under appropriate experimental conditions leads to the formation of Cp*W(O)(NC6H4-p-Me)(CH2SiMe3) (1), Cp*W(NC6H4-p-Me)2(CH2SiMe3) (2), or Cp*W(NC6H4-P-Me)[N(C6H4-P-Me)C(O)N(C6H4-P-Me)](CH2SiMe3) (3). Each of the complexes 1-3 is derived in a sequential manner from its precursor by incorporation of an additional p-tolyl isocyanate fragment or molecule. The spectroscopic properties of these organometallic imido complexes are consistent with their possessing three-legged (1 and 2) and four-legged (3) piano-stool molecular structures. These conclusions have been confirmed by single-crystal X-ray crystallographic analyses of 2 and 3. Crystal data for 2: triclinic},
	keywords = {ACTIVATION, AMIDO, AMMOXIDATION, COMPLEXES, LIGANDS, METAL, MOLYBDENUM, OXIDATION, propylene, SULFIDO},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1992JN06600027},
	author = {Legzdins,Peter and Phillips, E. C. and Rettig, S. J. and Trotter, J. and Veltheer, J. E. and Yee, V. C.}
}
@article {7302,
	title = {ORGANOMETALLIC OXO CHEMISTRY .4. REACTIVITY OF CP-ASTERISK-W(O)2(CH2SIME3) TOWARD PARA-TOLYL ISOCYANATE - CYCLOADDITION REACTIONS OF TUNGSTEN-OXO AND TUNGSTEN-IMIDO LINKAGES},
	journal = {Organometallics},
	volume = {11},
	number = {9},
	year = {1992},
	note = {ISI Document Delivery No.: JN066Times Cited: 50Cited Reference Count: 40},
	month = {Sep},
	pages = {3104-3110},
	type = {Article},
	abstract = {{Treatment of CP*W(O)2(CH2SiMe3) with p-tolyl isocyanate under appropriate experimental conditions leads to the formation of Cp*W(O)(NC6H4-p-Me)(CH2SiMe3) (1), Cp*W(NC6H4-p-Me)2(CH2SiMe3) (2), or Cp*W(NC6H4-P-Me)[N(C6H4-P-Me)C(O)N(C6H4-P-Me)](CH2SiMe3) (3). Each of the complexes 1-3 is derived in a sequential manner from its precursor by incorporation of an additional p-tolyl isocyanate fragment or molecule. The spectroscopic properties of these organometallic imido complexes are consistent with their possessing three-legged (1 and 2) and four-legged (3) piano-stool molecular structures. These conclusions have been confirmed by single-crystal X-ray crystallographic analyses of 2 and 3. Crystal data for 2: triclinic},
	keywords = {ACTIVATION, AMIDO, AMMOXIDATION, COMPLEXES, LIGANDS, METAL, MOLYBDENUM, OXIDATION, propylene, SULFIDO},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1992JN06600027},
	author = {Legzdins,Peter and Phillips, E. C. and Rettig, S. J. and Trotter, J. and Veltheer, J. E. and Yee, V. C.}
}
@article {7282,
	title = {STRUCTURAL STUDIES OF ORGANOBORON COMPOUNDS .51. N-METHYLHYDROXYLAMINE(O-B)2,5-DIPHENYL-1,3,2-DIOXABOROLAN-4-ONE},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {70},
	number = {4},
	year = {1992},
	note = {ISI Document Delivery No.: JH895Times Cited: 7Cited Reference Count: 43},
	month = {Apr},
	pages = {1188-1194},
	type = {Article},
	abstract = {{Three synthetic methods for the preparation of N-methylhydroxylamine(O-B)2,5-diphenyl-1,3,2-dioxaborolan-4-one (2-(1-oxa-2-azoniapropyl)-2,5-diphenyl-1,3-dioxa-2-boratacyclopentan-4-o ne), 9, in good yield are described. Crystals of this material are triclinic},
	keywords = {ACTIVATION, CRYSTAL, DERIVATIVES, HYDROXAMIC ACIDS, HYDROXYLAMINE, MODEL REACTIONS, MONOCYCLIC AROMATIC-AMINES, N-ARYL-O-(ALPHA-AMINOACYL)HYDROXYLAMINES, PHENACETIN, ULTIMATE CARCINOGENS},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1992JH89500022},
	author = {Kliegel, W. and Schumacher, U. and Rettig, S. J. and Trotter, J.}
}
@article {7015,
	title = {THERMAL AND PHOTOCHEMICAL-TRANSFORMATIONS OF ORGANOIRIDIUM PHOSPHIDE COMPLEXES - MECHANISTIC STUDIES ON CARBON PHOSPHORUS BOND FORMATION TO GENERATE CYCLOMETALATED HYDRIDE COMPLEXES BY ALPHA-HYDRIDE ABSTRACTION},
	journal = {Journal of the American Chemical Society},
	volume = {113},
	number = {23},
	year = {1991},
	note = {ISI Document Delivery No.: GP037Times Cited: 28Cited Reference Count: 62},
	month = {Nov},
	pages = {8724-8736},
	type = {Article},
	abstract = {{The thermal and photolytic transformations of a series of methyliridium(III) phosphide complexes are described. Complexes of the formula Ir(CH3)PR2[N(SiMe2CH2PPh2)2] (R = Ph, Me) rearrange thermally to generate the corresponding cyclometalated derivatives fac-Ir(eta-2-CH2PR2)H[N(SiMe2CH2PPh2)2]; continued thermolysis results in the formation of the iridium(I) phosphine complexes Ir(PMeR2)[N(SiMe2CH2PPh2)2]. Under photolytic conditions the phosphide derivatives rearrange directly to the phosphine complexes with no observable intermediates. The phenylphosphide complex Ir(CH3)PHPh[N-(SiMe2CH2PPh2)2] rearranges directly to the phosphine derivative Ir(PHPhMe)[N(SiMe2CH2PPh2)2] both thermally and photolytically with no observable intermediates. Crystals of lr(CH3)PPh2[N(SiMe2CH2PPh2)2] are monoclinic with a = 13.506 (3) angstrom},
	keywords = {ACTIVATION, C-H, CHEMISTRY, CRYSTAL-STRUCTURE, DERIVATIVES, HYDROGEN-BONDS, IRIDIUM, LIGAND, REACTIVITY, REDUCTIVE ELIMINATION},
	isbn = {0002-7863},
	url = {<Go to ISI>://A1991GP03700020},
	author = {Fryzuk,Michael D. and Joshi, K. and Chadha, R. K. and Rettig, S. J.}
}
