高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (6): 1189.

• 研究论文 • 上一篇    下一篇

硅氮化合物的结构与水解稳定性的关系

蒋舰, 彭文庆, 郑知敏, 徐彩虹, 谢择民   

  1. 中国科学院化学研究所分子科学中心, 北京 100080
  • 收稿日期:2001-03-13 出版日期:2002-06-24 发布日期:2002-06-24
  • 通讯作者: 谢择民(1935年出生),男,教授,博士生导师,主要从事耐高温有机硅新材料的合成和开发研究.E-mail:xiezm@infoc3.icas.ac.cn E-mail:xiezm@infoc3.icas.ac.cn
  • 基金资助:

    国家自然科学基金(批准号:20074040)资助

Relationships Between Structures and Hydrolytic Stability of Silazane Compounds

JIANG Jian, PENG Wen-Qing, ZHENG Zhi-Min, XU Cai-Hong, XIE Ze-Min   

  1. Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2001-03-13 Online:2002-06-24 Published:2002-06-24

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被引次数

24

摘要： 采用硅氮化合物本体与水蒸汽直接作用的方法,研究了一系列硅氮化合物的结构与水解稳定性之间的关系.结果表明,空间位阻越大则硅氮化合物水解稳定性越好,环张力对硅氮烷的水解稳定性有一定的影响,但空间位阻的作用更为显著.带有苯基的环二硅氮烷、六苯基环三硅氮烷和含硅氮键的高分子聚合物具有较大的空间位阻,因此水解稳定性非常好.

关键词: 硅氮化合物, 水解稳定性, 空间位阻, 环张力

Abstract: Relationships between structures of a series of silazane compounds and their hydrolytic stability were investigated by contacting silazane compounds directly with water vapor. It was indicated that steric hindrance of substituents strongly influenced hydrolytic stability of silazane compounds. Compounds with bigger substituents had better hydrolytic stability. As for cyclosilazanes, hydrolytic stability was also dependent on ring strength. However, steric hindrance played more dominant roles. Cyclosilazanes with phenyl substituents, hexaphenylcyclotrisilazane and polymeric compounds containing Si-N bond were of excellent hydrolytic stability due to high steric hindrance.

Key words: Silazane compound, Hydrolytic stability, Steric hindrance, Ring strength

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