高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (8): 1113.

• 论文 • 上一篇    下一篇

双核钼硫原子簇顺反异构体的定域化分子轨道研究

李松, 李前树, 唐敖庆   

  1. 吉林大学理论化学研究所, 长春, 130023
  • 收稿日期:1991-07-16 出版日期:1992-08-24 发布日期:1992-08-24
  • 通讯作者: 李前树
  • 基金资助:

    国家自然科学基金

Studies on the Localized Molecular Orbital Properties for Syn and Anti Isomers of Dinuclear Mo-S Clusters

LI Song, LI Qian-Shu, TANG Ao-Qing   

  1. Institute of Theoretical Chemistry, Jilin University, Changchun, 130023
  • Received:1991-07-16 Online:1992-08-24 Published:1992-08-24

摘要: 本文对簇合物离子[Mo2(μ-S)2S2(S2C2H4))2]2-的顺式和反式异构体进行了CNDO定域化计算,讨论了它的两种异构体的化学键性质,特别是Mo—Y(S)间的三重键性质.探讨了用亚层Mulliken布居数分析键的性质的可能性,并说明了这类簇离子多以顺式异构体存在的原因.

关键词: 定域分子轨道, 双核Mo&mdash, S原子簇, 化学键

Abstract: On the basis of summarization of structural properties of a series of cluster compounds with a core of [Mo2(μ-S)2Y2]2+ (Y=Oor S),the syn and anti isomers of typical compound were calculated by using the CNDO SCFand E-Rlocalization method.Their structures and bonding properties as well as the variety of Mo—Y(S) tribond with increasing the distance between Mo and Satoms were investigated.The inversion potential barrier between syn and anti isomers and the variance of molecular orbital properties were discussed.It is revealed that the molecular geometry factors play an important role in the formation of this barrier.

Key words: Localized molecular orbitals, Dinuclear Mo—S clusters, Chemical bonding

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