高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (1): 51.

• 研究论文 • 上一篇    下一篇

α,ω-二烃基取代全甲基多硅烷的合成及性质的研究

郭玉平, 徐善生, 周秀中   

  1. 南开大学化学系
  • 收稿日期:1987-09-02 出版日期:1989-01-24 发布日期:1989-01-24
  • 基金资助:

    中国科学院科学基金

The Synthesis and Properties of α,ω-Dihydrocarbyl Substituted Permethylpolysilanes

Guo Yuping, Xu Shansheng, Zbou Xiuzhong   

  1. Department of Chemistry, Nankai University, Tianjin
  • Received:1987-09-02 Online:1989-01-24 Published:1989-01-24

摘要: 由α,ω-二氯代全甲基多硅烷与多种格氏试剂作用合成了18种对称和非对称α,ω-二烃基取代全甲基多硅烷,对其中部分化合物的IR、UV及MS谱特性与其结构的关系进行了讨论。

关键词: &alpha, &omega, -二烃基取代全甲基多硅烷, 红移, dSi-&pi, 效应, &sigma, Si-Si-&pi, *

Abstract: Eighteen sym- and unsym-a,w-dihydrocarbyl substituted permethylpoly-silane were synthesized by means of the reaction of a, w-dichloropermethylpolysi-lane and the corresponding Grignard reagents. The IRspectral data showed that the C=CH2out-of-plane bending bands of vinyl substituted compounds are ~13cm-1larger than that of the corresponding allylic compounds, it may be interpreted by the dsi-π effect. The UVspectral bathochromic shift of vinyl substituted permeth-ylpolysilane is greater than that of the corresponding allylic compounds,it is due to the σsi-si* conjugative effect. The rearranged fragments of ArRMeSi++. appeared in the MSspectra of some of these compounds.The peaks of ArRMe2Si++. are the base peaks.It showed that the stability of Ar-Si bonds has been enhanced by the dis-π effect.

Key words: a,w-Dihydrocarbyl substituted permethylpolysilanes, dsl-&pi, effect, σsi-si-&pi, conjungative effect, Bathochromic shift

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