Reactions of trimethylsilylcyclopentadiene derivatives with titanium, niobium, and tantalum halides
作者:Ana M. Cardoso、Robin J. H. Clark、Stephen Moorhouse
DOI:10.1039/dt9800001156
日期:——
The use of trimethylsilyl derivatives as effective reagents for the new or improved syntheses of complexes of the early transition metals is described. Improved routes, involving the use of trimethylsilylcyclopentadiene, are described for the syntheses of [TiCl3(cp)], [TiBr3(cp)], [Til3(cp)], [NbCl4(cp)], and [TaCl4(cp)](cp = cyclopentadienyl). Routes, involving the use of bis(trimethylsilyl)cyclopentadiene
描述了使用三甲基甲硅烷基衍生物作为新的或改进的早期过渡金属配合物合成的有效试剂。描述了涉及使用三甲基甲硅烷基环戊二烯的改进路线,用于合成[TiCl 3(cp)],[TiBr 3(cp)],[Til 3(cp)],[NbCl 4(cp)]和[TaCl 4(cp)](cp =环戊二烯基)。路线,涉及使用双(三甲基硅烷基)环戊二烯的,针对类似的络合物的合成中描述TIX 3(ME 3的Si-η-C 5 H ^ 4)〕,其中X = Cl,Br或升。[TiCl 3(cp)],[TiBr 3(CP)]和[的TiCl 3(ME 3的Si-η-C 5 H ^ 4)]与各种双齿配体的描述。这些钛化合物的路易斯酸度与母体四卤化物的路易斯酸度相比大大降低,并且仅能肯定地鉴定出两个加合物:它们是[TiCl 3(cp)]·phen(phen = o -phenothroline)和[TiCl 3(Me 3的Si-η-C