Vanadium peroxocomplexes with Oact:V=2:1 ratio

Literature data on synthesis, crystal and molecular structures, thermal and other properties of vanadium peroxocomplexes with the Oact:V=2:1 ratio are analysed. Monomers and dimers containing mixed and unmixed ligands are considered. All monomeric oxodiperoxocomplexes of vanadium (5) are shown to be considered as derivatives of the [VO(O-O)2(H2O)x]- anion prepared by the substitution of water molecules by other mono- and polydentate ligands. And a resistant coordination polyhedron in the form of a pentagonal pyramid or a pentagonal bipyramid is formed. All dimeric oxodiperoxocomplexes of vanadium (5) can be considered as derivatives of the anion abovementioned, in which water molecules are substituted by monodentate -OVO(O-O)2 and -OHVO(O-O2) ligands