Reactivity of bis(η6-arene) derivatives of titanium, vanadium and niobium with fulvenes bearing electron-withdrawing substituents
作者:Lucia Calucci、Ulli Englert、Guido Pampaloni、Calogero Pinzino、Manuel Volpe
DOI:10.1016/j.jorganchem.2005.07.093
日期:2005.11
general formula M(O,O′-anion)3, where the metal is in the +III oxidation state, have been isolated for titanium and niobium. In the case of vanadium, different compounds have been obtained depending on the fulvene and the reaction conditions. In particular, solvated derivatives of vanadium(II) of general formula V(O,O′-anion)2(THF)2 have been prepared in THF whereas V(O,O′-anion)2 complexes have been
M的反应(η 6 -arene)2(M =的Ti,芳烃=的MeC 6 H ^ 5 ; M = V,Nb的,芳烃= 1,3,5-ME 3 Ç 6 ħ 3)用“pentacarbomethoxycyclopentadiene”(pcmcpH ),1-苯甲酰基-6-羟基-6-苯基富勒烯(dbcpH)和1-苯甲酰基-3-硝基-6-羟基-6-苯基富勒烯(dbncpH)随着二氢的析出和金属的氧化反应而发生配位分别包含O,O '配位的环戊二烯基阴离子的化合物,即[pcmcp] -,[dbcp] -和[dbncp] -。通式M的复合物(ø,ö ' -阴离子)图3中的金属处于+ III氧化态,已分离出钛和铌。在钒的情况下,取决于叶黄酮和反应条件,已经获得了不同的化合物。在通式V(钒(II)的特定,溶剂化衍生物ø,ö ' -阴离子)2(THF)2已在THF制备而V(ø,ö ' -阴离子)2种配合物的甲苯溶液被分离甚至在过量富勒烯存在的情况下。