Chemical Research in Chinese Universities ›› 2017, Vol. 33 ›› Issue (6): 958-964.doi: 10.1007/s40242-017-7054-5

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Circular Cationic Compounds B3Rgn+ of Triangular Ion B3+ Trapping Rare Gases

ZHANG Ruiwen, LI Anyong, LI Zhuozhe   

  1. School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
  • Received:2017-02-15 Revised:2017-05-03 Online:2017-12-01 Published:2017-06-05
  • Contact: LI Anyong,E-mail:aylifnsy@swu.edu.cn E-mail:aylifnsy@swu.edu.cn

Abstract: The circular cationic compounds B3Rgn+(n=1-3, Rg=He-Rn) formed by the electron-deficient aromatic ion B3+ trapping rare gases were studied theoretically. The formed B-Rg bond has large bonding energy in the range of 60-209 kJ/mol, its length is close to the sum of covalent radii of B and Rg, for Ar-Rn. The analyses based on the natural bond orbitals and electron density topology show that the B-Rg bonds for Ar-Rn have strong covalent character. The geometric structures, binding energy, bond nature and thermodynamic stability of the boron-rare gas compounds show that these species for Ar-Rn may be experimentally available. Several different theoretical studies have demonstrated that these triangular cations are aromatic.

Key words: B3Rgn+, Aromaticity, B3LYP, MP2, def2-QZVPPD