P[N(iBu)CH2CH2]3N:: A versatile non-ionic base for the synthesis of higher coordinate' silicates

被引：8

作者：

Kingston, JV ^{[1
]}

Verkade, JG ^{[1
]}

机构：

[1] Iowa State Univ, Dept Chem, Ames, IA 50011 USA

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2005年 / 8卷 / 07期

基金：

美国国家科学基金会;

关键词：

hexacoordinate silicates; organosilicates; phosphonium salts; proazaphosphatrane;

D O I：

10.1016/j.inoche.2005.04.009

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A room temperature reaction of tetramethyl-orthosilicate with catechol or substituted catechol derivatives, or hydroxy carboxylic acids in the presence of the proazaphosphatrane P((BuNCH2CH2)-Bu-i)(3)N, readily affords the first examples of phosphonium salt stabilized higher coordinate silicates of the type [HP((BuNCH2CH2)-Bu-i)(3)N](2)[Si(L)(3)] in high yields. A single crystal X-ray structural investigation of [HP((BuNCH2CH2)-Bu-i)(3)N](2)[Si(O2C6H4)(3)] revealed a hexacoordinate silicate framework with two independent phosphatranium cations, possessing strong transannular N-ax -> P bonds. (c) 2005 Elsevier B.V. All rights reserved.

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页码：643 / 646

页数：4

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