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。