高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (11): 1560.

• 研究论文 • 上一篇    下一篇

H3+O和H3+O(H2O)n(n=1,2,3)阳离子振动力场和光谱频率的理论计算

孙泽民, 李金山, 鄢国森   

  1. 四川大学化学系, 成都 610064
  • 收稿日期:1992-12-10 修回日期:1993-06-01 出版日期:1993-11-24 发布日期:1993-11-24
  • 通讯作者: 孙泽民, 男, 57岁, 教授.
  • 作者简介:孙泽民, 男, 57岁, 教授.
  • 基金资助:

    国家自然科学基金;国家教育委员会博士点基金

The Theoretical Calculation of Vibrational Force Fields and Spectral Frequencies of H3+O and H3+O(H2O)n(n=1,2,3) Ions

SUN Ze-Min, LI Jin-Shan, YAN Guo-Sen   

  1. Department of Chemistry, Sichuan University, Chengdu, 610064
  • Received:1992-12-10 Revised:1993-06-01 Online:1993-11-24 Published:1993-11-24

摘要: 本文利用多原子分子振动力场的模型势函法对H3+O和H3+O(H2O)n(n=1~3)阳离子的振动力场作了理论计算,并对其光谱频率进行了预测.H3+O和H9+O4的振动频率的结果优于从头算梯度法的结果.本文首次给出了H5+O2、H7+O3伸缩振动频率的理论预测值.

关键词: 水合质子, 模型势函法, 振动频率, 力常数

Abstract: The paper calculates theoretically the vibrational force fields of H3+O(H2O)n(n=0-3) ions with the model potential function method of polyatomic molecule and predicts these ions' vibrational frequencies.The results of H3+ Oand H9+O4 ions' vibrational frequencies are better than those of the ab initio gradient method's.This thesis gives first threoretical values of stretching vibration frequencies of H5+O2 and H7+O3.

Key words: Hydronium ion, Model potential function method, Vibrational frequency, Forceconstant

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