STABLE SILYLNITRILIUM IONS

被引：71

作者：

BAHR, SR ^{[1
]}

BOUDJOUK, P ^{[1
]}

机构：

[1] N DAKOTA STATE UNIV,DEPT CHEM,FARGO,ND 58105

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1993年 / 115卷 / 11期

关键词：

D O I：

10.1021/ja00064a012

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Trityl tetrakis[bis(3,5-trifluoromethyl)phenyl]borate, Ph3C+B[3,5-(CF3)2C6H3]4-, abstracts hydride from hydridosilanes, producing Ph3CH. Use of a weakly coordinating solvent (i.e., CH2Cl2) results in near-quantitative conversion of a trialkylsilane to the fluorosilane. When a more strongly coordinating solvent, e.g., butyronitrile, is used, a nitrile-stabilized silicenium ion (silylnitrilium ion), R3Si(NCC3H7)+B[3,5-(CF3)2C6H3]4-, is formed. This salt was characterized by NMR (H-1, C-13, B-11, F-19, Si-29) Spectroscopy as well as IR spectroscopy and conductivity measurements. The reactions of this species with simple nucleophiles are also reported.

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页码：4514 / 4519

页数：6

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