The role of oligomers in the synthesis of polysilanes by the Wurtz reductive coupling reaction

被引：16

作者：

Bratton, D ^{[1
]}

Holder, SJ ^{[1
]}

Jones, RG ^{[1
]}

Wong, WKC ^{[1
]}

机构：

[1] Univ Kent, Sch Phys Sci, Ctr Mat Res, Canterbury CT2 7NR, Kent, England

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2003年 / 685卷 / 1-2期

关键词：

polysilanes; oligosilanes; Wurtz reductive coupling; backbiting; endbiting;

D O I：

10.1016/S0022-328X(03)00641-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Size exclusion chromatography and Si-29-NMR spectroscopy have been used to investigate the evolution of low-molecular weight molecules during the synthesis of poly(methylphenylsilane) by alkali metal-mediated reductive coupling in diethyl ether, tetrahydrofuran and toluene, revealing clear evidence for the important role played by a dimer. In addition, the distinct origins of the stable cyclic oligomers that are ubiquitous side products of these reactions have been established, cyclopentamers being formed through endbiting during chain growth and cyclohexamers by a degradative backbiting reaction. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：60 / 64

页数：5

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