高等学校化学学报

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过渡金属-双硫分子配合物的理论研究

黄斌, 曹泽星   

  1. 厦门大学化学系, 固体表面物理化学国家重点实验室, 厦门 361005
  • 收稿日期:2007-09-27 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10
  • 通讯作者: 曹泽星

A Theoretical Study on Complexes of Transition Metals Complex with Extended-TTF Dithiolate Ligands

HUANG Bin, CAO Ze-Xing*   

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China
  • Received:2007-09-27 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
  • Contact: CAO Ze-Xing

摘要: 采用密度泛函方法, 对一系列过渡金属-双硫分子配合物的结构和相关性质进行了理论计算研究, 讨论了中心金属原子、配体等结构修饰对分子性质的影响. 计算结果表明, 过渡金属双硫分子配合物的HOMO和LUMO轨道主要由其配体轨道组成, 且其能隙很小; 中心金属原子和配体中一些基团的改变对分子配合物构型的影响很小, 而且HOMO-LUMO能隙变化不大. 配合物的氧化主要表现在配体部分, 氧化过程对调控HOMO-LUMO能隙具有十分重要的作用.

关键词: 双硫分子配合物 , 密度泛函计算, HOMO-LUMO能隙

Abstract: Geometries and properties of complexes of transition metals with extended-TTF dithiolate ligands were investigated by density functional theory. The effects of metal replacement and ligand modification on the structures and properties were explored. The results indicate that the HOMO-LUMO gaps in these complexes are very small. The complexation of transition metals with the extended TTF dithiolate ligand as well as the oxidation of complex plays an important role in reducing the HOMO-LUMO gap.

Key words: Dithiolate molecular complex, Density functinal theory, HOMO-LUMO gap

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