高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (12): 1906.

• 论文 • 上一篇    下一篇

过渡金属和硅烯配体相互作用的理论研究(Ⅰ)--MSiH2+的从头算研究

李吉海, 冯圣玉, 高建军, 刘少杰   

  1. 山东大学化学院, 济南 250100
  • 收稿日期:1999-11-02 出版日期:1999-12-24 发布日期:1999-12-24
  • 通讯作者: 李吉海,男,52岁,硕士,副教授.
  • 作者简介:李吉海,男,52岁,硕士,副教授.
  • 基金资助:

    国家自然科学基金(批准号:29170070)资助课题

The Theoretical Studies of Interaction of Transition metals with Silylene Ligands(Ⅰ) -- Ab Initio Study of MSiH2+

LI Ji-Hai, FENG Sheng-Yu, GAO Jian-Jun, LIU Shao-Jie   

  1. Chemical College, Shandong University, Jinan 250100, China
  • Received:1999-11-02 Online:1999-12-24 Published:1999-12-24

摘要: 以HF/6-311+G*基组研究了过渡金属硅烯离子MSiH2+(M从Sc至Cu)的构型、成键特征以及M-Si键解离能.具有共平面构型的MSiH2+,其M=Si键带有明显的双键特征,M=Si键解离能从Sc至Cu呈现周期性变化,与M的金属离子激发能有近似的线性关系.

关键词: 过渡金属硅烯离子, 构型, 键解离能, 从头算

Abstract: The HF/6-311+G*basis set was used to study the complexes of silylene, 1SiH2, with first row-transition-metaLIons. The MSiH2can be regarded as the result of coordination of 1SiH2with metaLIons, and are of coplanar structure. Their M=Si bonds are obviously of double bond characteristic. M=Si bond dissociation energies appear in periodic trends from Sc to Cu, and have an approximate linear relationship with metaLIon promotion energies.

Key words: Transition-metal silylene ion, Geometry, Bond dissociation energy, Ab initio

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