Electrochemical and ESR kinetics studies of electron transfer in the system bis(η6-Arene)Chromium(0)/bis(η6-Arene)Chromium(I)
作者:T.T.-T. Li、C.H. Brubaker
DOI:10.1016/s0022-328x(00)85762-9
日期:1981.8
The self-exchange rates and activation parameters in the (η6-arene)2Cr0/(η6- arene)2CrI systems (where arene = toluene, benzene, methoxylbenzene, biphenyl, ethylbenzoate and chlorobenzene) have been measured by the ESR line broaden ing technique in DMSO solvent. The one-electron reduction was investigated by cyclic voltammetry for the series of substituted complexes of (η6-arene)2CrI. A linear correlation
Metal ?-complexes of benzene derivatives. Part. 38. Pentaphenyltriphosphane(5) as a chelating ?12-ligand. Unusual formation of an interannular -(PPh)3-bridge at bis(benzene)chromium
phane(5)]chromium (8), which is formed from bis(lithio-η6-benzene)-chromium and dichlorophenylphosphane, and which is prepared more rationally from bis(chloro-η6-benzene)-chromium and K2P3Ph3, is the first sandwich complex featuring an interannular oligophosphane bridge –(PPh)n-, n ≥ 2; 31P1H}- and 1H-NMR spectra suggest that the stereoisomer 8-meso1 is formed exclusively and that the –(PPh)3- link
[(L-6):( 1'-6') - η-Pentaphenyltriphosphane(5)]铬(8),它是从双(锂代-η形成6 -苯) -铬和dichlorophenylphosphane,并且其制备更理性地从双(氯η 6 -苯) -铬和K 2 P 3博士3,是第一夹心复合物设有一个环间桥oligophosphane - (PPH)ñ - ,ñ ≥2; 31 P 1 H}-和1 H-NMR光谱表明,立体异构体8 - meso 1是唯一形成的,并且-(PPh)3-该三磷[3]色环环烷中的链接在193 < T <348 K范围内是非fluxional的。