Vanadyl ion

The vanadyl or oxovanadium(IV) cation, VO2+,[1] is a functional group that is common in the coordination chemistry of vanadium.Complexes containing this functional group are characteristically blue and paramagnetic.[2] The description of the bonding in the vanadyl ion was central to the development of modern ligand-field theory.VO2+, often in an ionic pairing with sodium (NaH2VO4), is the second most abundant transition metal in seawater, with its concentration only being exceeded by molybdenum.Some mineral water springs also contain the ion in high concentrations.
Structure of vanadyl acetylacetonate
Cavansite , a mineral containing the vanadyl cation that illustrates its characteristic color
pervanadyl ionvanadyl acetylacetonateCavansitecationfunctional groupcoordination chemistryvanadiumligand-field theorypentagonitetransition metalseawatermolybdenummineral waterspringsMount Fujivanadyl sulfatevanadyl isopropoxideisopropylvanadyl nitratevanadyl perchloratevanadyl fluoridevanadyl chloridepervanadylorthovanadatetitanylGreenwood, Norman N.Butterworth-HeinemannBibcode