CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2012, Vol. 29 ›› Issue (1): 139-144.

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Structure and Potential Energy Function of PCIx (X=1,2) Molecular Ground State

HAN Xiaoqin1,2, XIAO Xiajie1,3, LIU Yufang1   

  1. 1. Department of Physics, Henan Normal University, Xinxiang 453007, China;
    2. Department of Physics, Shangqiu Normal College, Shangqiu 476000, China;
    3. Henan Quality Polytechnic, Pingdingshan 467000, China
  • Received:2011-02-24 Revised:2011-05-24 Online:2012-01-25 Published:2012-01-25

Abstract: QCISD method is used to optimize possible ground-state structures of PCl and PCl2 molecule with multiple basis sets. Dissociation energy, harmonic frequency and force constants are calculated with 6-311 + G (dr) and 6-311G (dr) basis sets, respectively. They agree with experimental observations well. Potential energy functions of PCl2 are derived from many-body expansion theory. Potential energy curves verify structure characteristics and potential depth. Cl+ PCl and P + ClCl based on molecular reaction potential energy surface are discussed. It describes molecular reaction dynamics successfully.

Key words: PCIx(X=1,2), structure, potential energy function

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