高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (2): 319.doi: 10.7503/cjcu20130994

• 物理化学 • 上一篇    下一篇

异核金属多重键配合物Cp2MM'(μ-C8H8)的理论研究

刘楠楠1(), 丁益宏2(), 刘树萍1   

  1. 1. 哈尔滨商业大学化学中心, 哈尔滨 150076
    2. 吉林大学理论化学研究所, 理论化学计算国家重点实验室, 长春 130021
  • 收稿日期:2013-10-11 出版日期:2014-02-10 发布日期:2013-11-25
  • 作者简介:联系人简介: 刘楠楠, 女, 博士, 讲师, 主要从事理论化学研究. E-mail:liunann.yl@gmail.com; 丁益宏, 男, 博士, 教授, 博士生导师, 主要从事理论化学研究. E-mail:yhdd@jlu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21301041, 21273093, 21073074)资助

Theoretical Study on the Heteronuclear Metal-metal Multiple Bond Complexes Cp2MM'(μ-C8H8)

LIU Nannan1,*(), DING Yihong2,*(), LIU Shuping1   

  1. 1. Chemistry Center, Harbin University of Commerce, Harbin 150076, China
    2. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry,Jilin University, Changchun 130021, China
  • Received:2013-10-11 Online:2014-02-10 Published:2013-11-25
  • Contact: LIU Nannan,DING Yihong E-mail:liunann.yl@gmail.com;yhdd@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21301041,21273093, 21073074)

摘要:

研究了双核金属多重键配合物Cp2MM'(μ-C8H8)(MM'=ScMn, TiCr, ScCo, TiFe, VMn, VV, CrCr)的结构和成键模式. 计算结果表明, 对于28价电子体系, Cp2V2(μ-C8H8)基态为含V-V三重键的三态构型, 其等电子体Cp2TiCr(μ-C8H8)为Ti-Cr四重键的单态, 等电子体Cp2ScMn(μ-C8H8)为Sc-Mn三重键的单态. 对于30价电子体系, Cp2Cr2(μ-C8H8)基态为含Cr-Cr三重键的单态, 等电子体Cp2VMn(μ-C8H8)为含V-Mn单键的三态, 等电子体Cp2ScCo(μ-C8H8)和Cp2TiFe(μ-C8H8)为含Sc-Co和Ti-Fe双键的单态. 在三态Cp2MM'(μ-C8H8)中, 两个金属原子多为17电子构型, 而单态结构中两种金属原子多分别为16和18电子构型.

关键词: 金属多重键, 18电子规则, Cp2V2(μ-C8H8), Cp2Cr2(μ-C8H8)

Abstract:

The structure and bonding of the heteronuclear metal-metal multiple bond complexes Cp2MM'(μ-C8H8)(MM'=ScMn, TiCr, ScCo, TiFe, VMn) were theoretically studied. The calculated results shows that: (1) for the 28 ve systems, the ground-state of Cp2V2(μ-C8H8) is triplet state with V-V triple bond, the isoelectronic Cp2TiCr(μ-C8H8) is singlet state with Ti-Cr quadruple bond, and the isoelectronic species Cp2ScMn(μ-C8H8) is singlet state with Sc-Mn triple bond. (2) For the 30 valence electron systems, the ground-states of Cp2Cr2(μ-C8H8) is singlet state with Cr-Cr triple bond, the isoelectronic species Cp2VMn(μ-C8H8) is triplet state with V-Mn single bond, while the isoelectronic species Cp2ScCo(μ-C8H8) and Cp2TiFe(μ-C8H8) are singlet states with double metal-metal bond. In the triplet state of Cp2MM'(μ-C8H8), the two metal atoms are generally 17-electron configuration, while in the singlet state, the two metal atoms are generally respectively 16- and 18-electron configuration.

Key words: Metal-metal multiple bond, 18-Electron, Cp2V2(μ-C8H8), Cp2Cr2(μ-C8H8)

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