Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (11): 2006.doi: 10.7503/cjcu20160586

• Physical Chemistry • Previous Articles     Next Articles

Theoretical Studies on the [Y—C8H8—Y]2+ and L[Y—C8H8—Y]L (L=F, Cl, Br, I, Cp) Inverse Sandwiches with Y—Y Bond Passing Through the Ligand

LIU Nannan1,*(), YU Shuang2, DING Yihong2,*()   

  1. 1. Chemistry Center, College of Food Engineering, Harbin University of Commerce, Harbin 150076, China
    2. Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
  • Received:2016-08-17 Online:2016-11-10 Published:2016-10-18
  • Contact: LIU Nannan,DING Yihong E-mail:liunannyl@163.com;yhdd@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21301041, 51476049, 21273093, 21473069, 21073074) and the Natural Science Foundation of Heilongjiang Province, China(No;B201409)

Abstract:

The inverse sandwiches [Y—C8H8—Y]2+ and L[Y—C8H8—Y]L(L=F, Cl, Br, I) were theoretically investigated. The calculated results show that the singlet isomers with inverse sandwich configuration are the ground states, which are relatively stable against isomerization. [Y—C8H8—Y]2+ and L[Y—C8H8—Y]L(M=Cl, Br, I) have distinct Y—Y metallic bond passing through the center hole of C8H8 ligand, yet the Y—Y interaction in F[Y—C8H8—Y]F is very weak. Besides, the multiple-decker sandwich Cp[Y—C8H8—Y]Cp(Cp=C5H5) also has Y—Y metallic bond passing through the center ligand. The results also show that the stronger the Y—Y bond is, the higher the dissociation energy of coordinated complex is. The bond passing through the ligand makes a noticeable contribution to the stability of inverse sandwiches.

Key words: Organic metal, Aromatic ligand, Metal-metal bond, Transition metal, Scandium family

CLC Number: 

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