高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (7): 1102.

• 论文 • 上一篇    下一篇

氟磺酸氯分子振动光谱的从头算研究

薛英, 谢代前, 鄢国森   

  1. 四川大学化学系, 成都 610064
  • 收稿日期:1998-06-08 出版日期:1999-07-24 发布日期:1999-07-24
  • 通讯作者: 谢代前
  • 作者简介:薛英,女,36岁,副教授.
  • 基金资助:

    国家自然科学基金(批准号:29706115);高等学校博士学科点专项基金

Ab Initio Study on the Vibrational Spectra of Chlorine Fluorosulfate(ClOSO2F)

XUE Ying, XIE Dai-Qian, YAN Guo-Sen   

  1. Department of Chemistry, Sichuan University, Chengdu, 610064
  • Received:1998-06-08 Online:1999-07-24 Published:1999-07-24

摘要: 采用从头算HF方法以6-31G*基组研究了对ClOSO2F分子的几何结构、振动谐性力场和红外光谱.理论力场由Pulay的标度量子力学方法进行标度,算得的振动频率与实验值比较,平均偏差为6.0cm-1.根据振动频率的势能分布和从头算红外光谱强度值对此分子的振动基频进行了理论归属.

关键词: 氟磺酸氯, 从头算, 振动力场, 振动光谱

Abstract: The optimized geometry, harmonic force field and infrared intensities of ClOSO2F were calculated at ab initio HFlevel with 6-31G*basis set. The theoretical force field was scaled using the scaled quantum mechanical method of Pulay. The average deviation between the experimental and computed frequencies is 6.0cm-1. The assignment of the fundamentals for this molecule was also performed according to the potential energy distribution and the ab initio IR intensities.

Key words: Chlorine fluorosulfate, Ab initio calculation, Vibrational force field, Vibrational spectra

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