11Department of Chemistry, Faculty of science, East Tehran branch, Islamic Azad university, Qiam Dasht, Tehran, Iran
2Young Researchers and Elites club, North Tehran Branch, Islamic Azad University, Tehran, Iran
Equilibrium geometry, electronic structures, and vibrational modes of CoB8- were investigated in the PBEPBE/6-311+G(d,p) level of theory. The nucleus independent chemical shift (NICS) analysis and magnetizability values were used for studying of aromaticity in CoB8-. The effects of different solvents on the structure and frontier orbital energies were calculated using the polarizable continuum model (PCM). Quantum theory of atoms in molecules (QTAIM) was used for analysis of Co-B and BB bonds.Geometry optimization was performed using Perdew, Burke and Ernzerhof exchange functional and the gradient-corrected correlation functional of Perdew, Burke and Ernzerhof (PBEPBE) , and frequency calculation is done to confirm the status of the potential energy minimum.