Ph3C+Al(OC6F5)4- (4). The pentachlorides MCl5 (M = Nb, Ta) undergo reaction with 6.0 equiv of LiOC6F5 in Et2O to afford crystalline Li(OEt2)n+[M(OC6F5)4(μ2-OC6F5)2]2Li}·C7H8 salts (M = Nb, n = 4 (5a); M = Ta, n = 3 (5b)), which can be cleanly converted with Ph3CCl to the corresponding mononuclear, thermally stable Ph3C+M(OC6F5)6- salts (M = Nb (6a); M = Ta (6b)) in high yield. X-ray diffraction analysis
的LiAlH的反应4与4.0当量的HOC 6 ˚F 5在
甲苯引线至H 2的演变和形成的Li +的Al(OC 6 ˚F 5)4 - ; 后续的Ph易位3的CCl然后得到相应的三苯甲基四(pentafluorophenoxo)铝中,Ph 3 Ç +的Al(OC 6 ˚F 5)4 - (4)。五
氯化物MCl 5(M = Nb,Ta)与Et 2中的6.0当量LiOC 6 F 5反应O操作得到的结晶的Li(OET 2)Ñ + [M(OC 6 ˚F 5)4(μ 2 -OC 6 ˚F 5)2 ] 2李}·C 7 H ^ 8盐(M =
铌,Ñ = 4(图5a); M =
钽,ñ = 3(图5b)),其可与pH下干净地转化3的CCl为相应的单核,热稳定的pH 3 ç + M(OC 6 ˚F 5)6 -盐(M =
铌(6a); M = Ta(6b))高收率。对6的X射线衍射分析显示,六坐标
金属中心的线性严重破坏了OC