高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (7): 1108.

• 论文 • 上一篇    下一篇

锂氟类硅烯与乙烯加成反应的理论研究

冯大诚, 冯圣玉, 邓从豪   

  1. 山东大学理论化学研究室, 济南 250100
  • 收稿日期:1995-07-28 出版日期:1996-07-24 发布日期:1996-07-24
  • 通讯作者: 冯大诚,男,48岁,副教授.
  • 作者简介:冯大诚,男,48岁,副教授.
  • 基金资助:

    国家自然科学基金

A Theoretical Study on the Addition Reaction of Silylenoid H2SiLiF and Ethylene

FENG Da-Cheng, FENG Sheng-Yu, DENG Cong-Hao   

  1. Institute of Theoretical Chemistry, Shandong University, Jinan 250100
  • Received:1995-07-28 Online:1996-07-24 Published:1996-07-24

摘要: 用从头计算方法研究了锂氟类硅烯与乙烯的加成反应H2SiLiF+C2H4→H2SiC2H4+LiF.该反应的过渡态和类卡宾与乙烯的反应相似。反应前后的能量差经零点能校正后仅为-2.4kJ/mol(MP2/6-31G*//6-31G*).本文分析了孩反应的热力学和动力学性质,计算了反应热力学函数的变化、平衡常数、A因子以及速率常数。

关键词: 类硅烯H2SiLiF, 加成反应, 从头算, 热力学和动力学计算

Abstract: The addition reaction of silylenoid H2SiLiF and ethylene,H2SiLiF+C2H4→SiC2H6+LiF,has been studied by using ab initio calculations.The transition state is similar to that of carbenoid′s reaction.The difference of energies between reactants and products corrected by zero-point energies is-2.4kJ/mol(MP2/6-31G*//6-31G*).The thermodynamic and kinetic calculation have been done and the change in thermodynamic functions,equilibrium constants,factor Aand rate constants of the reaction are given in this paper.

Key words: Silylenoid H2SiLiF, Addition reaction, Ab initio calculation, Thermodynamic and kinetic calculation

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