高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (4): 513.

• 论文 • 上一篇    下一篇

硫杂环丁烷热解机理的理论研究

陈光巨1, 傅孝愿1, 唐敖庆2   

  1. 1. 北京师范大学化学系, 北京, 100875;
    2. 吉林大学理论化学研究所
  • 收稿日期:1991-04-20 出版日期:1992-04-24 发布日期:1992-04-24
  • 通讯作者: 傅孝愿
  • 基金资助:

    国家教育委员会博士点基金

Theoretical Study on the Thermolysis of Thietane

CHEN Guang-ju1, FU Xiao-yuan1, TANG Ao-qing2   

  1. 1. Dept. of Chem., Beijing Nor. Univ., Beijing, 100875;
    2. Inst. of Theor. Chem., Jilin Univ.
  • Received:1991-04-20 Online:1992-04-24 Published:1992-04-24

摘要: 利用从头算取极小基STO-3G*和扩展基3-21G*分别研究了硫杂环丁烷热分解反应的机理。对某些驻点进行了MP2/3-21G*的计算。结果表明该反应能以两种可能的分步过程发生,其中首先断裂碳硫键的分步过程比首先断裂成碳键的过程容易进行,而且这两种分步过程均以产生双自由基中间体为基本特征。

关键词: 硫杂环丁烷, 从头计算, 反应机理, 热解反应

Abstract: The mechanism of the thermolysis of thietane to form ethylene and thioformaldehyde has been studied by using ab initio SCF MOmethod at STO-3G* and 3-21G* levels.It has been found that there are two possible stepwise pathways and the cleavage of C-Sbond is preferred over that of C-Cbond.The basic characteristic of these two step processes is to produce biradical intermediates.

Key words: Thietane, Ab initio, Thermolysis, Reaction mechanism

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