波谱学杂志 ›› 2004, Vol. 21 ›› Issue (1): 57-60.

• 研究论文 • 上一篇    下一篇

笼形倍半硅氧烷NMR的研究

陆方, 严宝珍*,  胡高飞,  郭灿雄,  许锦华   

  1. 北京化工大学理学院, 北京 100029
  • 收稿日期:2003-07-18 修回日期:2003-09-11 出版日期:2004-03-05 发布日期:2004-03-05

NMR STUDY OF CAGE-LIKE SILSESQUIOXAN

 LIU Fang, YAN Bao-Zhen*,  Hu-Gao-Fei,  Guo-Can-Xiong, X-Jin-Hua   

  1. Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2003-07-18 Revised:2003-09-11 Online:2004-03-05 Published:2004-03-05

摘要:

笼形倍半硅氧烷是一类典型的多面体有机-无机分子复合物. 29Si NMR是测定这类含硅化合物结构的有效方法. 利用29Si NMR对6种笼形八聚倍半硅氧烷的结构进行了研究,结合所得数据探讨了这类化合物中取代基电负性对29Si NMR化学位移的影响. 根据1H,13C NMR数据及各峰归属可以进一步判断笼形倍半硅氧烷取代基R的类型和结构.

关键词: 核磁共振, 结构, 29Si、1H 、13C NMR, 笼形倍半硅氧烷

Abstract:

Cagelike silsesquioxane is a special type of polyhedral compound composed of both organic and inorganic molecules, whose structure can be determined effectively by 29Si NMR. In this article, we studied the structures of six kinds of cage-like octa silsesquioxane by NMR. Combining experimental data and empirical treatment, it was found that the electronegativity of the subsistent on the cage has important influences on the silicon chemical shifts. The structures of the subsistent on cage-like silsesquioxane were determined by using 1H and 13C NMR.

Key words: NMR, structure, 29Si、1H、13C NMR, cage-like silsesquioxane

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