Unusual ''cation-like'' zirconocene hydrosilyl complex. Silylium ligand or a nonclassically bonded Si-H?

被引：39

作者：

Dioumaev, VK ^{[1
]}

Harrod, JF ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT CHEM,MONTREAL,PQ H3A 2K6,CANADA

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 18期

关键词：

D O I：

10.1021/om960254m

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The novel zirconocene complexes [Cp'Zr-2(mu-H)(SiHR)](2+)(2)[BR'(n)(C6F5)(4-n)](2-)(2) (Cp'=Cp, MeCp, Me(5)Cp; R=Ph or PhCH(2); R'=Bu or H) were isolated from silane dehydropolymerization reaction mixtures catalyzed by Cp'2ZrCl2/2BuLi/B(C6F5)(3) or by [Cp(2)'Zr(mu-H)H](2)/2B(C6F5)(3) combination catalysts. A total structure analysis of these compounds, performed by multinuclear, multidimensional NMR spectroscopy, shows that each zirconocene fragment bears a positive charge, which is delocalized between the metal center and hydrosilane ligand.

引用

页码：3859 / 3867

页数：9

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[1] IDENTIFICATION OF SOME INTERMEDIATES IN THE TITANOCENE-CATALYZED DEHYDROGENATIVE COUPLING OF PRIMARY ORGANOSILANES [J].