Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (8): 769-774. Previous Articles     Next Articles

HPO3异构体结构与稳定性

于海涛1, 仲华1, 池玉娟1,2, 付宏刚1,2,3, 孙家钟1,3   

  1. 1. 黑龙江大学化学化工学院, 哈尔滨, 150080;
    2. 哈尔滨工业大学应用化学系, 哈尔滨, 150001;
    3. 吉林大学理论化学研究所, 理论化学计算国家重点实验室, 长春, 130023
  • 投稿日期:2003-08-16 修回日期:2003-12-20 发布日期:2014-02-18
  • 通讯作者: 付宏刚,E-mail:fuhg@vip.sina.com E-mail:fuhg@vip.sina.com
  • 基金资助:
    国家自然科学基金(Nos.20301006,20271019)及黑龙江省杰出青年科学基金(2003)资助项目.

Structures and Stability of HPO3 Isomers

YU Hai-Tao1, ZHONG Huaa1, CHI Yu-Juan1,2, FU Hong-Gang1,2,3, SUN Jia-Zhong1,3   

  1. 1. College of Chemistry and Chemical Engineering, Heilongjiang University, Harbin 150080;
    2. Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001;
    3. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023
  • Received:2003-08-16 Revised:2003-12-20 Published:2014-02-18

The potential energy surface (PES) of HPO3 system including nine isomers and eleven transition states was predicted at B3LYP/6-311++G(3df, 3pd) level of theory, and the connections were checked by intrinsic reaction coordinate calculations. The calculated results indicated that in HPO3 system thermodynamically the most stable species HOPO2 with planar structure (E1), (cis, cis)-HOOPO conformational isomer (E3), and stereo HP(O)O2 with Cs symmetry, were found to have higher kinetic stability. The predicted results are in good agreement with previous experimental studies. Two new stereoisomers with HOPO2 connectivity obtained in this work were unstable because of their very low dissociation energies.

Key words: HPO3 system, isomer, isomerization, kinetic stability