Direct observation of beta-methyl elimination in cationic neopentyl complexes: Ligand effects on the reversible elimination of isobutene

被引：140

作者：

Horton, AD

机构：

[1] Shell Res. Technol. Ctr., Amsterdam, 1030 BN Amsterdam

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 12期

关键词：

D O I：

10.1021/om960089a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

beta-Me elimination from cationic neopentyl complexes, [Cp'Zr-2(CH(2)CMe(3))](+), has been demonstrated. The more crowded complex (Cp' = C(5)Me(5)) eliminates isobutene instantaneously at -75 degrees C, whereas the less crowded analogue (Cp' = C5H5) is Stable in solution at 0 degrees C but undergoes reversible beta-Me elimination at 25 degrees C; strong anion or Lewis base coordination suppresses beta-Me elimination, consistent with involvement of a 14-electron species.

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页码：2675 / 2677

页数：3

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