The ansa-effect in permethyltantalocene chemistry:: a [Me2Si] ansa bridge promotes olefin-insertion and reductive-elimination reactions for [Me2Si(C5Me4)2]Ta(η2-C2H4)H and [Me2Si(C5Me4)2]TaH3

被引：43

作者：

Shin, JH ^{[1
]}

Parkin, G ^{[1
]}

机构：

[1] Columbia Univ, Dept Chem, New York, NY 10027 USA

来源：

CHEMICAL COMMUNICATIONS | 1999年 / 10期

关键词：

D O I：

10.1039/a900895k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ansa-effect, as it applies to tantalocene chemistry, has been investigated by a comparison of the chemistry of [Me2Si(C5Me4)(2)]TaH3 and [Me2Si(C5Me4)(2)]Ta(eta(2)-C2H4)H with their permethyltantalocene counterparts; these studies demonstrate that incorporation of the [Me2Si] ansa bridge substantially enhances the rates of both reductive elimination of Hz and ethylene-insertion into a Ta-H bond.

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页码：887 / 888

页数：2

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