@article {4050,
	title = {Cyclopentadienyl nitrosyl compounds of chromium: aqueous solution chemistry, pi bonding and nitric oxide loss},
	journal = {Journal of the Chemical Society-Dalton Transactions},
	number = {18},
	year = {1997},
	note = {ISI Document Delivery No.: XZ144Times Cited: 9Cited Reference Count: 59},
	month = {Sep},
	pages = {3269-3276},
	type = {Article},
	abstract = {{The compiler [Cr(eta-C5H5)(NO)(2)(CF3SO3)] 1 was synthesised in order to explore the relationship between a-donor ligands and nitrosyl lability and to investigate the aqueous chemistry of the [Cr(eta-C5H5)(NO)(2)](+) fragment. Treatment of 1 with sigma-donor ligands gave [Cr(eta-C5H5)(NO)(2)(L)][CF3SO3] salts. Potentiometric titrations and H-1 NMR spectroscopic studies of 1 provided evidence for the existence of [Cr(eta-C5H5)(NO)(2)-(H2O)](+) and [Cr(eta-C5H5)(NO)(2)-(OH)] in aqueous solution. When generated in sitic, [Cr(eta-C5H5)(NO)(2)-(OH)] reacted with acetylacetone, pyridinecarboxylic acid, or salicylaldehyde to form paramagnetic, mononitrosyl complexes which were independently synthesised from the mononitrosyl precursor [Cr(eta-C5H5)(NO)-(mu-I)](2). The solid-state molecular structures of [Cr(eta-C5Me5)(NO)(2)(CF3SO3)] 2, [Cr(eta-C5H5)(NO)(2)(N2C5H7)] 9 and [Cr(eta-C5H4)(NO)(O2C5H7)] 10 were determined by X-ray crystallography. Crystals of 2 are monoclinic},
	keywords = {ATOM TRANSFER, CHEMISTRY, COORDINATION, HYDROGEN, MECHANISTIC IMPLICATIONS, METHYLPALLADIUM(II) ALKOXIDE COMPLEXES, ORGANOMETALLIC CHEMISTRY, {antitumor agents},
	isbn = {0300-9246},
	url = {<Go to ISI>://A1997XZ14400027},
	author = {Legzdins,Peter and Rettig, S. J. and Smith, K. M. and Tong, V. and Young, V. G.}
}
@article {4049,
	title = {Synthesis and characterization of 17-valence-electron [CpCr(NO)X-2](-) anions: Oxidatively induced loss of the nitrosyl ligand},
	journal = {Journal of the American Chemical Society},
	volume = {119},
	number = {15},
	year = {1997},
	note = {ISI Document Delivery No.: WU272Times Cited: 13Cited Reference Count: 123},
	month = {Apr},
	pages = {3513-3522},
	type = {Review},
	abstract = {Several anionic and paramagnetic [CpCr(NO)X-2](-) complexes (X = I [1], O3SCF3 (OTf) [2], Br [3], Cl [4]) have been prepared as potential precursors to neutral CpCr(NO)X-2 species. Reaction of [CpCr(NO)I](2) with [NBu4]I provides [NBu4][1], and halide abstraction from [NBu4][1] with 2 equiv of AgOTf affords [NBu4][2]. The weakly-bound OTf- ligands of [NBu4][2] are readily displaced by Br- to produce [NBu4][3]. The dichloro complexes [NEt4][4] and [PPN][4] are obtained by treating [CpCr(NO)Cl](2) with [NE4]Cl and [PPN]Cl, respectively. Use of acetonitrile as reaction solvent allows generation of the requisite [CpCr(NO)Cl](2) directly from CpCr(NO)(CO)(2) and PCl5, a marked improvement over previous synthetic routes to this dimer. Similar halogenations of Cp*Cr(NO)(CO)(2) in NCMe provide access to the previously unknown [Cp*Cr(NO)I](2) (5), and [Cp*Cr(NO)Cl](2) (6), halo-bridged, and dimers. The solid-state molecular structure of [PPN][4]. CH2Cl2 has been established by single-crystal X-ray crystallography to be a normal three-legged piano stool. The one-electron oxidation of [4] has been investigated both chemically (by reaction with [Cp2Fe](+)) and electrochemically (by cyclic voltammetry). These studies suggest that upon oxidation a high-spin CpCr(NO)Cl-2 complex is initially formed which then rapidly releases NO. Extended Huckel molecular-orbital calculations have been performed on [4], [CpCr(CO)(3)](-), and [CpCrCl3](-), three CpCr-containing anions with ligands of varying pi-bonding capabilities. Correlations between their orbital energies and electron occupancies and a rationale for the lability of the NO ligand in neutral CpCr(NO)Cl-2 are provided.},
	keywords = {CATALYSTS, COMPOUNDS, CRYSTAL-STRUCTURE, ETHYLENE POLYMERIZATION, MOLECULAR-STRUCTURE, ORGANOMETALLIC CHEMISTRY, {AMINOCARBYNE COMPLEXES},
	isbn = {0002-7863},
	url = {<Go to ISI>://A1997WU27200013},
	author = {Legzdins,Peter and McNeil, W. S. and Rettig, S. J. and Smith, K. M.}
}
@article {4039,
	title = {Synthesis of novel diamagnetic chromium(II) alkyl complexes},
	journal = {Organometallics},
	volume = {16},
	number = {16},
	year = {1997},
	note = {ISI Document Delivery No.: XP426Times Cited: 7Cited Reference Count: 38},
	month = {Aug},
	pages = {3569-3571},
	type = {Article},
	abstract = {Reaction of Cr(NO)((NPr2)-Pr-i)(3) with PhCO2H leads to Cr(NO)((NPr2)-Pr-i)(O2CPh)(2) (1). The benzoate ligands of 1 may be replaced to form the diamagnetic, structurally-characterized organometallic complexes CpCr(NO)-((NPr2)-Pr-i)(OC(O)Ph) (2), CpCr(NO)((NPr2)-Pr-i)(CH2SiMe3) (3),and Cr(NO)((NPr2)-Pr-i)(CH2SiMe3)(2) (4).},
	keywords = {CLEAVAGE, LIGANDS, MOLYBDENUM, ORGANOMETALLIC CHEMISTRY, REACTIVITY, TUNGSTEN},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1997XP42600001},
	author = {Kuzelka, J. and Legzdins,Peter and Rettig, S. J. and Smith, K. M.}
}
