Electron spin resonance spectra of dibromo- and dichloro-complexes of vanadium(IV)
作者:Adam Jezierski、J. Barrie Raynor
DOI:10.1039/dt9810000001
日期:——
trans-dihalogen vanadium(IV) complexes [VX2(L4)]. They are characterised by their e.s.r. spectra and in most cases the unpaired electron is in a dx2–y2 orbital. In some cases both cis and trans isomers can be detected and characterised, because of significant differences in e.s.r. parameters. In the case of [VX2(L4)][X = Cl or Br, L4= tropolonate or perfluoropinacolate], the unpaired electron is in a dz2
SOCl 2或SOBr 2与20种钒基配合物[VO(L 4)]·(L 4 =四齿或两个双齿配体)的反应,生成含有顺式或反式二卤钒(IV)配合物的溶液2(L 4)]。它们由其esr光谱表征,在大多数情况下,未成对的电子在d x 2 – y 2轨道中。在某些情况下,由于esr参数存在显着差异,因此可以检测和表征顺式和反式异构体。在[VX2(L 4)] [X = Cl或Br,L 4 =对苯二酸酯或全氟频子酸酯],未配对的电子在d z 2轨道中,并且该结构被认为是三棱柱形的。
Preparation and reactions of a bis(phenylhydrazine) compound of vanadium(III)
作者:G.Jeffery Leigh、J.Roger Sanders
DOI:10.1016/s0277-5387(00)80642-7
日期:1989.1
Abstract Complexes [VX2(salen)] (X = Cl, Br) are reduced by hydrazines to give either [VX(salen)(ROH)]ROH (R = Me, Et) or [VX(salen)}2], depending on the solvent. Treatment of [VO(salen)] with I2 in acetonitrile gives I5− or I7− salts of the [V(salen)}2(μ-O)]+ cation, which are reduced by diethylaluminium ethoxide in the presence of phenylhydrazine, to give [V(PhNHNH2)2(salen)]I.
The acid promoted disproportionation of a vanadium(IV) phenolate: implications for vanadium uptake in tunicates
作者:Joseph A. Bonadies、Vincent L. Pecoraro、Carl J. Carrano
DOI:10.1039/c39860001218
日期:——
Under anaerobic conditions VIVO(salen)(salen =N,N′-ethylenebis-salicylideneaminato) undergoes an acidpromoteddisproportionation to yield a VIII(salen) species and VVO(salen)+ which upon addition of chloride ion react via back electron transfer to yield VIVO(salen) and VIVCl2(salen).
在缺氧条件下,V IV O(salen)(salen = N,N'-亚乙基双-水杨酰亚胺基)发生酸促进歧化,产生V III(salen)物种和V V O(salen)+,在加入氯离子后发生反应通过反向电子转移产生V IV O(salen)和V IV Cl 2(salen)。
Hughes, David L.; Kleinkes, Uwe; Leigh, G. Jeffery, Journal of the Chemical Society, Dalton Transactions, 1993, # 20, p. 3093 - 3096
作者:Hughes, David L.、Kleinkes, Uwe、Leigh, G. Jeffery、Maiwald, Michael、Sanders, J. Roger、et al.