高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (2): 216.

• 论文 • 上一篇    下一篇

化学反应的内禀反应坐标法(Ⅶ)--乙炔与乙烯[2s+2a]环加成反应的反应路径解析

傅强, 夏欣夫, 赵成大, 黄敬安, 陈彬   

  1. 东北师范大学化学系, 130024
  • 出版日期:1991-02-24 发布日期:1991-02-24
  • 基金资助:

    国家自然科学基金

The IRC Method in Chemical Reactions (Ⅶ)--Reaction Ergodography for the Cycloaddition of Acetylene and Ethylene

Pu Qiang, Xia Xin-fu, Zhao Cheng-da, Huang Jing-an, Chen Bin   

  1. Department of Chemistry, Northeast Normal University, Changchun, 130024
  • Online:1991-02-24 Published:1991-02-24

摘要: 采用IRC在RHF/3-21G水平上对乙炔与乙烯的[2s+2a]加成反应途径进行了量子化学从头算.结果表明此反应是由乙烯和乙炔分子间的相向平动向产物的振动转化实现的.从理论上说明了反应物分子上的取代基对这一反应过程起促进作用.IRC解析直观地体现了此反应过程所遵守的轨道对称守恒规则.

关键词: IRC解析, 从头算, [2s+2a]]环加成

Abstract: The reaction mechanism for [2s+2a] cycloaddition of acetylene and ethylene was studied by using ab initio at the RHF/3-21Glevel. The result indicates that this reaction process go through the transformation from the translation of reactant to the vibration of product. Thus, the subtitution effect will have an important influence on such a reaction process. The physically visual picture provided by the IRCanalysis gives a convincing evidence for the Woodward-Hoffmann rule.

Key words: IRC, Ab initio, Cycloaddition

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