It is noteworthy that in Ref. , the authors considered the B-N bonds in borazine to be essentially ionic as the    at the BCP is positive. However, in our opinion, this bond should be referred to as an extremely polar covalent bond because electron sharing character is still prominent on it, as shown by the large value of MBO and negative H at corresponding BCP. The evident localization of electrons around the bond shown by the electron localization function (ELF) map in Figure and the greatly increased electron density during formation of the bond from isolated atoms shown by deformation density (def) map in Figure provide supporting evidence for our assertion.