Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (2): 319.doi: 10.7503/cjcu20130994

• Physical Chemistry • Previous Articles     Next Articles

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)

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)

CLC Number: 

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