化学学报 ›› 2000, Vol. 58 ›› Issue (1): 56-59. 上一篇    下一篇

研究论文

构造SO~2分子势能面的李代数方法

郑雨军;丁世良   

  1. 山东大学理论化学研究室.济南(250100)
  • 发布日期:2000-01-15

Constracting potential energy surface of SO~2using lie algebra

Zheng Yujun;Ding Shiliang   

  1. Shandong Univ, Theoret Chem Lab.Jinan(250100)
  • Published:2000-01-15

把李代数方法得到的SO~2分子的代数Hamiltonian,利用相干态基经典化并找到一个新的变换,将分子的键角引入,而得到SO~2分子的势能面。由该势能面计算的解离能,所给出的势能面的立体图和相应的等高线以及力常数与其他方法给出的相一致。该方法可以推广到多原子分子及反应体系。

关键词: 二氧化硫, 势能面, 李代数, 振动态, 激发态

Algebraic Hamiltonian of SO~2 molecule is classified using coherent state. The potential energy surface is derived from classical Hamiltonian. We proposed a new transformation for introducing the bond angle to the potential energy surface. We calculated the force constants and dissociation energy using this potential energy surface, and create the surface figure and its contour. These results are in good agreement with previous results. This method can be easily extended to polyatomic molecules.

Key words: SULFUR DIOXIDE, POTENTIAL ENERGY SURFACES, LIE ALGEBRA, VIBRATIONAL STATE, EXCITED STATE

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