Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (7): 1625.doi: 10.7503/cjcu20200106

• Physical Chemistry • Previous Articles     Next Articles

Planar Tetracoordinate Boron and Pentacoordinate Boron in B6S5 Clusters

WANG Yiqiao,WANG Cong,LIU Xingman,ZHANG Min(),GENG Yun,ZHAO Liang()   

  1. Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
  • Received:2020-03-02 Online:2020-07-10 Published:2020-05-09
  • Contact: ZHANG Min,ZHAO Liang E-mail:mzhang@nenu.edu.cn;zhaoliang@nenu.edu.cn
  • Supported by:
    † National Natural Science Foundation of China(21673036);Fundamental Research Funds for the Central Universities, China(2412018ZD006)

Abstract:

At the level of B3LYP/def2-TZVP optimization and CCSD single point energy, $B_{6}S^{n}_{5}$ (n=0, +1, +2) was utilized to validate the valuable effect of peripheral sulfur atom on constructing planar coordinated boron. The structures of global energy minimum(GEM) and the second lowest energy minimum in three charge states are purely planar ones, and their structures are very similar. Only their order is exchanged with the loss of the electrons. There exists a planar pentacoordinate boron in the GEM structure of D5h-B6S5 due to the 18 electron rule, and there are all the planar tetracoordinate borons in the GEM structure of $B_{6}S^{n}_{5}$ (n=0, +1, +2). Meanwhile, the sulfur-bridging bonding is another key factor to maintain their planar molecular structures.

Key words: $B_{6}S^{n}_{5}$ (n=0,+1+2), Planar tetracoordinate, Planar pentacoordinate, Aromaticity, Sulfur bridge

CLC Number: 

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