化学学报 ›› 2004, Vol. 62 ›› Issue (14): 1353-1356. 上一篇    下一篇

ICl3电离能的实验和理论研究

乔志敏1,2, 曾艳丽1,2, 孙树涛1,2, 孙巧1,2, 王殿勋2   

  1. 1. 中国科学院化学研究所, 分子动态与稳态结构国家重点实验室, 北京, 100080;
    2. 中国科学院研究生院, 北京, 100039
  • 投稿日期:2003-11-13 修回日期:2004-03-20 发布日期:2014-02-17
  • 通讯作者: 王殿勋,E-mail:wangdx@infoc3.icas.ac.cn E-mail:wangdx@infoc3.icas.ac.cn
  • 基金资助:
    国家自然科学基金(No.20073052)资助项目.

PES and Theoretical Studies on the Ionization Potentials of Iodine Trichloride

QIAO Zhi-Min1,2, ZENG Yan-Li1,2, SUN Shu-Tao1,2, SUN Qiao1,2, WANG Dian-Xun2   

  1. 1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039
  • Received:2003-11-13 Revised:2004-03-20 Published:2014-02-17

结合紫外光电子能谱实验和量子化学计算方法研究了三氯化碘的电离能.实验得到的ICl3的紫外光电子能谱是一氯化碘和氯气的混合能谱,这表明Icl3分解为ICl和Cl2.采用B3LYP方法在6-311++G(df)基组水平上得到了ICl3分解的过渡态.计算表明ICl3分解吸收少量热量,反应的活化能为168.4 kJ/mol.采用HF方法和外壳层格林函数方法(OVGF)预测了ICl3不同轨道的电离能,OVGF方法得到的ICl3第一垂直电离能为10.372 eV.

关键词: 三氯化碘, 电离能, 紫外光电子能谱, OVGF

By combining the photoelectron spectroscopy (PES) with theoretical calculations, the ionization potentials of iodine trichloride were studied.The PES experiments showed that the spectroscopy of ICl 3 was made up of the spectra of iodine chloride and chlorine.The structure of the transition state was examined using the B3LYP method with 6-311++G(df) basis set.The energy change for the dissociation reaction was estimated to be a little endothermic, and the activation energy for the process was 168.4 kJ/mol.The vertical ionization potentials of iodine trichloride was estimated using HF and the outer valence Green's function methods with 6-311++G(df) basis set.The OVGF method predicted that the first vertical ionization potential for iodine trichloride was 10.732 eV.

Key words: iodine trichloride, photoelectron spectroscopy(PES), ionization potential, OVGF