高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (4): 363.

• 论文 • 上一篇    下一篇

INDO基组中包括f轨道时单中心双电子积分的旋转不变性

任镜清, 徐光宪   

  1. 北京大学化学系
  • 收稿日期:1986-12-13 出版日期:1988-04-24 发布日期:1988-04-24
  • 通讯作者: 任镜清
  • 基金资助:

    中国科学院科学基金

On the Rotational Invariance of the INDO Method Including f Orbitals into the Basis Set

Ren Jingqing, Xu Guangxian   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1986-12-13 Online:1988-04-24 Published:1988-04-24

摘要: 在包括f轨道的INDO方法中,为保证单中心双电子积分的旋转不变性。提出了两种方法,一种是将单中心双电子积分(μμ|νν)、(μν|μν)和(μμ|μμ)分别用它们的权重平均值Jμμ′、Kμμ′和J′μμ=Jμμ′+2Kμμ′,来代替;第二种方法除了Coulomb积分和交换积分外,还保留全部单中心双电子杂化积分。为此,导出了690个非零的杂化积分的Slater-Condon参数表达式。

关键词: INDO, f轨道, 双电子积分, 旋转不变性

Abstract: In order to ensure the rotational invariancc of the onc-conter-two-eleclrcn integrals in the INDOmethod including f orbilais info the basis ECin our previous paper, we have proposed two methods to meet this requirement in the present investigation. The first one is to use the weighted average values Jμμ′,Kμμ′, and J′μμ= Jμμ′+2Kμμ′ for the integrals (μμ| vv), (μV,μV) and (μμ|μμ), respectively. The second is a more stringent alternative, in which we have derived 690 nonzero hybrid one-center-two-electron integrals in addition to coulomb and exchange types as expressions of Slater-Condon parameters.

Key words: INDO, f-Orbital, Two-electronintegrals, Rotationl invariance

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