高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (9): 1677.

• 研究论文 • 上一篇    下一篇

1,1,1-三氟乙烷与~.OH自由基反应的理论研究

王焕杰, 任浩, 冯大诚, 顾月姝   

  1. 山东大学化学院, 济南250100
  • 收稿日期:2004-08-02 出版日期:2005-09-10 发布日期:2005-09-10
  • 基金资助:

    国家自然科学基金(批准号:20373034)资助.

Theoretical Study on the CF3CH3+·OH Reaction

WANG Huan-Jie, REN Hao, FENG Da-Cheng, GU Yue-Shu   

  1. School of Chemistry, Shandong University, Jinan 250100, China
  • Received:2004-08-02 Online:2005-09-10 Published:2005-09-10

摘要: CF3CH3在大气中的降解主要是其与.OH自由基反应.用量子化学密度泛函方法B3LYP在6-31G(d,p)基组水平上对该反应进行了研究.CF3CH3与.OH自由基的反应有6个通道:直接H抽提反应、直接F抽提反应、取代CF3反应、取代CH3反应、取代F反应和取代H反应,其中4个取代反应均为SN2型的取代反应.直接抽提H的反应是最有可能发生的,其余的5个反应的势垒都很高.

关键词: 反应机理, CF3CH3, .OH, 密度泛函理论方法

Abstract: The elementary reaction of CF3CH3+·OH was studied by using density functional theory(DFT) B3LYP method with the 6-31G(d,p) basis set. There are six pathways of the reaction of CF3CH3 with ·OH radical: direct hydrogen abstraction, direct fluorine abstraction, CF3 substitution, CH3 substitution, fluorine substitution and hydrogen substitution. Four substitution reactions are SN2 reaction. We affirmed that the main reaction pathway of the reaction CF3CH3+.OH is a direct hydrogen abstraction.

Key words: Reaction mechanism, CF3CH3, ~.OH, Density functional theory method

中图分类号: 

TrendMD: