Comment on "Strong Be-Be bonds in double-aromatic bridged Be 2 (μ-SO) molecules" by F. Rezaie and S. Noorizadeh, Dalton Transactions , 2022, 51, 12596.

Metal-metal interactions have always fascinated chemists. One such interesting example is the Be-Be interaction. Recently, a strong Be-Be interaction in a bridged Be 2 (μ-SO) cluster has been proposed by Rezaie et al. I, hereby, challenge their view. Detailed calculations reveal that there is no Be-Be interaction in the proposed cluster. In fact, the proposed bridged structure is energetically very high on the potential energy surface. The global minimum has completely different geometry from that reported by Rezaie et al. and features no Be-Be interaction at all.