高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (7): 1004.

• 研究论文 • 上一篇    下一篇

二甲基铍中铍原子的共价

义祥辉1, 黎乐民2, 徐光宪2   

  1. 1. 广西师范大学化学系;
    2. 北京大学化学系, 北京 100871
  • 收稿日期:1992-11-23 修回日期:1993-03-22 出版日期:1993-07-24 发布日期:1993-07-24
  • 通讯作者: 徐光宪
  • 作者简介:第一作者:男, 35岁, 副教授.
  • 基金资助:

    国家自然科学基金

Covalence of Be in Dimethylberyllium

YI Xiang-Hui1, LI Le-Min2, XU Guang-Xian2   

  1. 1. Department of Chemistry, Guangxi Normal University, Guilin;
    2. Department of Cliemistry, Peking University, Beijing, 100871
  • Received:1992-11-23 Revised:1993-03-22 Online:1993-07-24 Published:1993-07-24

摘要: 根据共价的新定义,以自然键轨道法研究了二甲基铍中铍原子的共价情况.结果表明,在二甲基铍的单体、二聚体和多聚体中,铍的共价分别为2、4和6.

关键词: 共价, 二甲基铍, 自然键轨道法

Abstract: The study on the covalence of Be in dimethylberyllium has been undertaken with the method of natural bond orbitals(NBO) on the basis of the new definition of covalence proposed by XU Guang-xian, and the results are reported in this paper.Through the analysis of the eigenvalues and eigenvectors of the submatrices related to proper fragments of the monomer, dimer and polymer of dimethyl-beryllium, it is found that there exists three center-two electron dative bond between the bridge methyl and beryllium atoms whereas there is not dative bond between the terminal methyl and beryllium atom, thus the covalences of Be in monomer, dimer and polymer of dimethylberyllium are 2, 4 and 6 respectively.

Key words: Covalence, Dimethylberyllium, NBO

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