Abstract Interaction of [M(NBut)(NHBut)(H2NBut)Cl2]2, M Nb, Ta, with five equiv. of ButNHLi gave [M(NBut)3(NHBut)]Li2}2, M Nb (2a), M = Ta (2b), which showed the presence of three different tert-butylimido groups and resisted further metallation. Interaction of MCl5, M Nb, Ta, with 1-amino-2,2,6,6-tetramethylpiperidine, C9H18NNH2, in the presence of Me3SiClEt3N gave (Et3NH)[M(C9H18N2)2Cl4]
[M(NBut)(NHBut)(H2NBut)Cl2] 2,MNb,Ta与5个当量的相互作用 ButNHLi的缩合反应得到[M(NBut)3(NHBut)] Li2} 2,M(Nb(2a),M = Ta(2b),这表明存在三个不同的叔丁基
酰亚胺基,并能抵抗进一步的
金属化。MCl5,MNb,Ta与1-
氨基-
2,2,6,6-四甲基哌啶C9H18NNH2的相互作用,在Me3SiClEt3N存在下得到(Et3NH)[M(
C9H18N2)2Cl4],MNb( 3a),MTa(3b)。与NH4VO3的相似相互作用产生低产率的[( )2(OSiMe3)2 V(μ-O)V(O)(OSiMe3)2](4)。已经确定了(2a),(3b)和(4)的X射线晶体结构。