Vanadyl ion
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The vanadyl ion 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 or purple[2] and paramagnetic.[3] A triple bond is proposed to exist between the V4+ and O2− centers.[4] The description of the bonding in the vanadyl ion was central to the development of modern ligand-field theory.[5]
Natural occurrence
[edit | edit source]Minerals
[edit | edit source]Cavansite and pentagonite are vanadyl-containing minerals.[citation needed]
Water
[edit | edit source]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.[6] In the ocean the average concentration is 30 nM. Some mineral water springs also contain the ion in high concentrations. For example, springs near Mount Fuji often contain as much as 54 μg per liter.[6]
Vanadyl-containing compounds
[edit | edit source]Oxovanadium(IV)
[edit | edit source]- vanadyl acetylacetonate, VO(acac)2
- vanadyl sulfate, VOSO4
- vanadyl acetate, VO(CH3COO)2
Oxovanadium(V)
[edit | edit source]- vanadyl isopropoxide, VO(O-iPr)3 (iPr denotes isopropyl)
- vanadyl nitrate, VO(NO3)3[7]
- vanadyl perchlorate, VO(ClO4)3
- vanadyl fluoride, VOF3
- vanadyl chloride, VOCl3
Related species
[edit | edit source]- pervanadyl ion, VO+
2,[1][8] also known as the dioxovanadium(V) ion - metavanadate ion, [VO
3]n−
n - orthovanadate ion, VO3−
4 - thiovanadyl ion, VS2+
- titanyl ion, TiO2+
- niobyl ion, NbO2+
- tantalyl ion, TaO2+
References
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External links
[edit | edit source]- Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons
