Theoretical studies on the geometry, vibrational frequencies and electronic properties of [X(OH)6Mo6O18]4−/3− (X = FeII/CoIII) Anderson-type anions

Also electronic properties of protonated form have been investigated for [AlIII(OH)6Mo6O18]3− with the other title anions which suggested the [(X(OH)6)n−@M6O18] general formula to describe the anionic subunit X(OH)6 surrounded by M6O18 neutral ring.