@article {1208, title = {Group 13 and lanthanide complexes with mixed O,S anionic ligands derived from maltol}, journal = {Inorganic Chemistry}, volume = {44}, number = {8}, year = {2005}, note = {ISI Document Delivery No.: 916GWTimes Cited: 23Cited Reference Count: 61}, month = {Apr}, pages = {2666-2677}, type = {Article}, abstract = {Four mixed O,S binding ligand precursors derived from maltol (3-hydroxy-2-methyl-4-pyrone) have been chelated to gallium(III), indium(III), and lanthanide(III) ions to yield a series of metal complexes. The four ligand precursors include two pyranthiones, 3-hydroxy-2-methyl-4-pyranthione, commonly known as thiomaltol (Htma), and 2-ethyl-3-hydroxy-4-pyranthione, commonly known as ethylthiornaltol (Hetma), and two pyridinethiones, 3-hydroxy-2-methyl-4(H)-pyridinethione (Hmppt) and 3-hydroxy-1,2-dimethyl-4-pyridinethione (Hdppt). Dimeric forms of the pyridinethiones, Hmppt dimer and Hdppt dimer, were also isolated and characterized. Complete characterization of the monomeric organic compounds is reported including acidity constants and crystal structures of Htma, Hetma, and Hdppt dimer. Reacting the four monomeric ligand precursors with Ga3+ and In3+ ions yielded new tris(bidentate ligand) complexes. X-ray-quality crystals of the fac isomer of Ga(tma)(3) were also obtained. New complexes with a range of anthanicles (Ln(3+)) were also synthesized with the two pyranthiones, Htma and Hetma. The synthesis reactions yielded complexes of the type LnL(3)center dot xH(2)O and LnL(2)(OH)center dot xH(2)O, as indicated by elemental analysis and spectroscopic evidence such as mass spectral data and IR and NMR spectra.}, keywords = {ACID, aluminum, CHELATE COMPLEXES, CHEMISTRY, CRYSTAL-STRUCTURE, DIAGNOSTIC-TOOLS, gallium, indium, METAL-COMPLEXES, RADIOPHARMACEUTICALS}, isbn = {0020-1669}, url = {://000228374400017}, author = {Monga, V. and Patrick, B. O. and Orvig, Chris} } @article {1208, title = {Group 13 and lanthanide complexes with mixed O,S anionic ligands derived from maltol}, journal = {Inorganic Chemistry}, volume = {44}, number = {8}, year = {2005}, note = {ISI Document Delivery No.: 916GWTimes Cited: 23Cited Reference Count: 61}, month = {Apr}, pages = {2666-2677}, type = {Article}, abstract = {Four mixed O,S binding ligand precursors derived from maltol (3-hydroxy-2-methyl-4-pyrone) have been chelated to gallium(III), indium(III), and lanthanide(III) ions to yield a series of metal complexes. The four ligand precursors include two pyranthiones, 3-hydroxy-2-methyl-4-pyranthione, commonly known as thiomaltol (Htma), and 2-ethyl-3-hydroxy-4-pyranthione, commonly known as ethylthiornaltol (Hetma), and two pyridinethiones, 3-hydroxy-2-methyl-4(H)-pyridinethione (Hmppt) and 3-hydroxy-1,2-dimethyl-4-pyridinethione (Hdppt). Dimeric forms of the pyridinethiones, Hmppt dimer and Hdppt dimer, were also isolated and characterized. Complete characterization of the monomeric organic compounds is reported including acidity constants and crystal structures of Htma, Hetma, and Hdppt dimer. Reacting the four monomeric ligand precursors with Ga3+ and In3+ ions yielded new tris(bidentate ligand) complexes. X-ray-quality crystals of the fac isomer of Ga(tma)(3) were also obtained. New complexes with a range of anthanicles (Ln(3+)) were also synthesized with the two pyranthiones, Htma and Hetma. The synthesis reactions yielded complexes of the type LnL(3)center dot xH(2)O and LnL(2)(OH)center dot xH(2)O, as indicated by elemental analysis and spectroscopic evidence such as mass spectral data and IR and NMR spectra.}, keywords = {ACID, aluminum, CHELATE COMPLEXES, CHEMISTRY, CRYSTAL-STRUCTURE, DIAGNOSTIC-TOOLS, gallium, indium, METAL-COMPLEXES, RADIOPHARMACEUTICALS}, isbn = {0020-1669}, url = {://000228374400017}, author = {Monga, V. and Patrick, B. O. and Orvig, Chris} } @article {5232, title = {Chemistry of Re with N,N {\textquoteright}-bis(2-pyridylmethyl)ethylenediamine (H(2)pmen): Hydrolysis, dehydrogenation, and ternary complexes}, journal = {Inorganic Chemistry}, volume = {40}, number = {9}, year = {2001}, note = {ISI Document Delivery No.: 423DBTimes Cited: 13Cited Reference Count: 49}, month = {Apr}, pages = {2005-2010}, type = {Article}, abstract = {A number of Re complexes with N,N {\textquoteright} -bis(2-pyridylmethyl)ethylenediamine (H(2)pmen) have been made from [NH4]-[ReO4]. . [ReOCl(2)H(2)pmen)]Cl, [ReOCl(Hpmen)][ReO4], and [ReO2(H(2)pmen)] [ReO4] are related by hydrolysis/HCl substitution [ReOCl(Hpmen)] [ReO4] was structurally characterized and found to contain a water-stable amido-Re bend. Dehydrogenation of the N-donor ligand from each amine to imine with concomitant two-electron reduction of the Re center occurs readily in these systems. With suitable 3-hydroxy-4-pyrones, ternary complexes such as [(ReCl)-Cl-III(ma)(C14H14N4)][ReO4]. CH3OH, 5, were made from [NH4][ReO4], H(2)pmen . 4HCl and pyrones in one-pot syntheses. 5, a seven-coordinate Re-III complex, was structurally characterized.}, keywords = {aluminum, CHELATE COMPLEXES, COORDINATION-COMPOUNDS, gallium, LIGANDS, RADIOPHARMACEUTICALS, RAY CRYSTAL-STRUCTURE, Rhenium complexes, technetium, TRIS(2-PYRIDYLMETHYL)AMINE}, isbn = {0020-1669}, url = {://000168159200007}, author = {Xu, L. and Pierreroy, J. and Patrick, B. O. and Orvig, Chris} } @article {5115, title = {Complexes of phosphine-phenolate ligands with the [Re=O](3+) and [Re(HNNC5H4N)(NNC5H4N)](2+) cores}, journal = {Journal of the Chemical Society-Dalton Transactions}, number = {20}, year = {2001}, note = {ISI Document Delivery No.: 487VFTimes Cited: 5Cited Reference Count: 62}, pages = {3015-3024}, type = {Article}, abstract = {{Complexes incorporating the [Re=O](3+) core have been synthesised with ligands containing the new methyl substituted phosphine-phenolate PO and PO2 donor sets, (2-hydroxy-5-methylphenyl) diphenylphosphine (H(MePO)) and bis(2-hydroxy-5-methylphenyl) phenylphosphine (H-2(Me2PO2)). The analogous tert-butyl ligands, (5-tert-butyl-2-hydroxyphenyl)diphenylphosphine (H(t-BuPO)) and bis(5-tert-butyl-2-hydroxyphenyl) phenylphosphine (H-2 (t-Bu2PO2)), were also prepared. Reaction of either mer-[ReOCl3 (PPh3)(2)] or [NH4][ReO4] in CH3OH with H(MePO) led to formation of [ReOCl(MePO)(2)] (1) in good yield. Reaction of [NH4][ReO4] with H-2 (Me2PO2) in CH3OH afforded [ReO(Me2PO2)(H(Me2PO2))] (2), also in good yield. X-Ray crystallographic analyses of 1 and 2 demonstrated that both complexes are neutral and octahedral, and contain the oxo moiety. Two complexes have been structurally characterised from the reaction of (o-hydroxyphenyl) diphenylphosphine (HPO) with [Re(Hhypy)(hypyH)Cl-3]: [Re(Hhypy)(hypy)(PO)(HPO)]Cl (3) and [ReCl(Hypy)(hypy)(PO)] (4) (hypy = NNC5H4N}, keywords = {CHELATE COMPLEXES, COORDINATION-COMPOUNDS, CRYSTAL-STRUCTURE, IIB/IIIA-RECEPTOR ANTAGONIST, MOLECULAR-STRUCTURES, rhenium, STRUCTURE, TC-99M, TECHNETIUM RADIOPHARMACEUTICALS, WATER-SOLUBLE PHOSPHINES, X-RAY}, isbn = {1472-7773}, url = {://000171899200011}, author = {Kovacs, M. S. and Hein, P. and Sattarzadeh, S. and Patrick, B. O. and Emge, T. J. and Orvig, Chris} } @article {5148, title = {Insulin-enhancing vanadium(III) complexes}, journal = {Inorganic Chemistry}, volume = {40}, number = {18}, year = {2001}, note = {ISI Document Delivery No.: 466JNTimes Cited: 67Cited Reference Count: 54}, month = {Aug}, pages = {4686-4690}, type = {Article}, abstract = {Simple, high-yield, large-scale syntheses of the V(III) complexes tris(maltolato)vanadium(III), V(ma)(3), tris-(ethyhmaltolato)vanadium(HI), V(ema)(3), tris(kojato)vanadium(III) monchydrate, V(koj)(3).H2O, and tris(1,2-dimethyl-3-hydroxy-4-pyridinonato)vanadium(III) dodecahydrate, V(dpp)(3). 12H(2)O, are described; the characterization of these complexes by various methods and, in the case of V(dpp)(3). 12H(2)O, by an X-ray crystal structure determination, is reported. The ability of these complexes to normalize glucose levels in the STZ-diabetic rat model has been examined and compared with that of the benchmark compound BMOV (bis(maltolato)oxovanadium(IV)), an established insulin-enhancing agent.}, keywords = {AGENT, aluminum, BIS(MALTOLATO)OXOVANADIUM(IV), CHELATE COMPLEXES, COORDINATION CHEMISTRY, CRYSTAL-STRUCTURE, DIABETIC RATS, gallium, GLUCOSE, LIGANDS, MIMETIC}, isbn = {0020-1669}, url = {://000170642600028}, author = {Melchior, M. and Rettig, S. J. and Liboiron, B. D. and Thompson, K. H. and Yuen, V. G. and McNeill, J. H. and Orvig, Chris} } @article {4290, title = {Tripodal trisamides based on nicotinic and picolinic acid derivatives}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {76}, number = {4}, year = {1998}, note = {ISI Document Delivery No.: 101TQTimes Cited: 6Cited Reference Count: 46}, month = {Apr}, pages = {414-425}, type = {Article}, abstract = {{A number of polydentate arylamide ligands have been prepared by coupling various acyclic tripodal or linear polyamines with derivatives of nicotinic and picolinic acids. Two synthetic procedures were utilized; tris {[(2-hydroxynicotinyl)carbonyl]-2-aminoethyl} (H3NICTREN) was prepared by Method A, the HOSu/DCC method, and the other arylamides in this study were prepared by Method B, the CDI method. Method A involved the reaction of N-hydroxysuccinimide with 2-hydroxynicotinic acid (in the presence of dicyclohexylcarbodiimide (DCC) as a dehydrative coupling reagent) to form the succinimide ester, followed by reaction with TREN to yield H3NICTREN. Method B involved reaction of a carboxylic acid (2-hydroxynicotinic, 3-hydroxypicolinic, nicotinic, or picolinic acids) with carbonyldiimidazole (CDI) to form the N-acylimidazolide, followed by reaction with the amine (TREN, TAME, spermidine, or TRPN) to yield the desired arylamide. The X-ray structure of 1,1,1-tris{[(3 -hydroxypicolinyl) carbonyl] -2-aminomethyl} ethane (H3PICTBME) was determined; crystals of H(3)PICTAME are monoclinic}, keywords = {aluminum, arylamide, CHELATE COMPLEXES, COORDINATION CHEMISTRY, DISTANCES, ENTEROBACTIN ANALOGS, FERRIC ENTEROBACTIN, gallium, hydrogen bonding, MICROBIAL IRON TRANSPORT, NEUTRAL WATER, preorganization, STABILITY}, isbn = {0008-4042}, url = {://000074884600007}, author = {Hoveyda, H. R. and Karunaratne, V. and Nichols, C. J. and Rettig, S. J. and Stephens, A. K. W. and Orvig, Chris} } @article {7111, title = {1-NORMAL-PROPYL-3-HYDROXY-2-METHYL-4-PYRIDINONE AND 1-NORMAL-BUTYL-3-HYDROXY-2-METHYL-4-PYRIDINONE COMPLEXES OF GROUP 13 (IIIA) METAL-IONS}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {69}, number = {5}, year = {1991}, note = {ISI Document Delivery No.: FP799Times Cited: 22Cited Reference Count: 22}, month = {May}, pages = {893-900}, type = {Article}, abstract = {{The aluminum, gallium, and indium tris(ligand) complexes of 3-hydroxy-2-methyl-1-n-propyl-4-pyridinone and 1-n-butyl-3-hydroxy-2-methyl-4-pyridinone have been prepared and characterized. All six compounds were prepared in a one-pot synthesis from maltol, n-propyl-, or n-butylamine and an appropriate metal(III) salt, and were completely characterized (IR, FAB-MS, H-1 NMR, Al-27 NMR, elemental analysis). Three of the six complexes were studied by single-crystal X-ray diffraction and were found to form trihydrates, unlike their 1-methyl and 1-ethyl analogues, which formed dodecahydrates. The n-butylpyridinone complex Al(C10H14NO2)3.3H2O (Al(nbp)3.3H2O) and n-propylpyridinone complexes Al(C9H12NO2)3.3H2O (Al(npp)3.3H2O), and Ga(C9H12NO2)3.3H2O (Ga(npp)3.3H2O) were essentially isostructural, crystallizing in the space group P3BAR with the following crystal parameters for Al(nbp)3.3H2O (Al(npp)3.3H2O, Ga(npp)3.3H2O): a = 15.885(1) (15.328(1), 15.367(2)) angstrom}, keywords = {3-HYDROXY-4-PYRIDINONES, aluminum, bonding, CHELATE COMPLEXES, CHEMISTRY, crystal structures, EXOCLATHRATE, gallium, HYDROGEN, HYDROXYPYRIDINONE LIGANDS, indium, INVIVO, LIGANDS, metal complexes}, isbn = {0008-4042}, url = {://A1991FP79900019}, author = {Simpson, L. and Rettig, S. J. and Trotter, J. and Orvig, Chris} } @article {7111, title = {1-NORMAL-PROPYL-3-HYDROXY-2-METHYL-4-PYRIDINONE AND 1-NORMAL-BUTYL-3-HYDROXY-2-METHYL-4-PYRIDINONE COMPLEXES OF GROUP 13 (IIIA) METAL-IONS}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {69}, number = {5}, year = {1991}, note = {ISI Document Delivery No.: FP799Times Cited: 22Cited Reference Count: 22}, month = {May}, pages = {893-900}, type = {Article}, abstract = {{The aluminum, gallium, and indium tris(ligand) complexes of 3-hydroxy-2-methyl-1-n-propyl-4-pyridinone and 1-n-butyl-3-hydroxy-2-methyl-4-pyridinone have been prepared and characterized. All six compounds were prepared in a one-pot synthesis from maltol, n-propyl-, or n-butylamine and an appropriate metal(III) salt, and were completely characterized (IR, FAB-MS, H-1 NMR, Al-27 NMR, elemental analysis). Three of the six complexes were studied by single-crystal X-ray diffraction and were found to form trihydrates, unlike their 1-methyl and 1-ethyl analogues, which formed dodecahydrates. The n-butylpyridinone complex Al(C10H14NO2)3.3H2O (Al(nbp)3.3H2O) and n-propylpyridinone complexes Al(C9H12NO2)3.3H2O (Al(npp)3.3H2O), and Ga(C9H12NO2)3.3H2O (Ga(npp)3.3H2O) were essentially isostructural, crystallizing in the space group P3BAR with the following crystal parameters for Al(nbp)3.3H2O (Al(npp)3.3H2O, Ga(npp)3.3H2O): a = 15.885(1) (15.328(1), 15.367(2)) angstrom}, keywords = {3-HYDROXY-4-PYRIDINONES, aluminum, bonding, CHELATE COMPLEXES, CHEMISTRY, crystal structures, EXOCLATHRATE, gallium, HYDROGEN, HYDROXYPYRIDINONE LIGANDS, indium, INVIVO, LIGANDS, metal complexes}, isbn = {0008-4042}, url = {://A1991FP79900019}, author = {Simpson, L. and Rettig, S. J. and Trotter, J. and Orvig, Chris} }