Complexation and exchange reactions of some dimethylamino-substituted group 4 compounds
作者:Steven R. Wade、Gerald R. Willey
DOI:10.1039/dt9810001264
日期:——
Reactions of CH2(NMe2)2, (1), SiMe2(NMe2)2, (2), [Ti(cp)(NMe2)3](cp =η-cyclopentadienyl), (3), and [Zr(cp)2(NMe2)2], (4), with covalent metal halides MCl4(M = Ti, Zr, Hf, Si, Ge, or Sn) and MCl3(M = Ti, V, or Cr) fall into two categories: (a)N-donor chelation leading to complex formation and (b) halide–NMe2 exchange. Compound (1) gives 1 : 1 complexes with MCl4(M = Ti or Sn) and a 2 : 1 complex with
CH 2(NMe 2)2,(1),SiMe 2(NMe 2)2,(2),[Ti(cp)(NMe 2)3 ](cp =η-环戊二烯基),(3)和[Zr(cp)2(NMe 2)2 ],(4),以及共价金属卤化物MCl 4(M = Ti,Zr,Hf,Si,Ge或Sn)和MCl 3(M = Ti,V或Cr)分为两类:(a)N-供体螯合导致复合物形成,以及(b)卤化物-NMe 2交换。化合物(1)与MCl 4产生1:1配合物(M = Ti或Sn)和与VCl 3的2∶1配合物。化合物(2)提供与MCl 4的1:1配合物(M = Ti,Zr,Hf或Sn)。TiCl 4 ·SiMe 2(NMe 2)2 → [TiCl 3(NMe 2)]的分解总是在固态和溶液中发生。(2)与金属(III)的氯化物没有反应。使用MCl 4(M = Si或Ge)时,发生涉及卤化物-NMe 2交换的“加扰”反应,这些反应已通过1