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Vanadyl ion

Polyatomic ion in chemistry

Vanadyl ion

Polyatomic ion in chemistry

Structure of [[vanadyl acetylacetonate

The vanadyl ion or oxovanadium(IV) cation, VO2+, is a functional group that is common in the coordination chemistry of vanadium. Complexes containing this functional group are characteristically blue or purple and paramagnetic. A triple bond is proposed to exist between the V4+ and O2− centers. The description of the bonding in the vanadyl ion was central to the development of modern ligand-field theory.

Natural occurrence

Minerals

Cavansite and pentagonite are vanadyl-containing minerals.

Water

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. 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.

Vanadyl-containing compounds

Oxovanadium(IV)

  • vanadyl acetylacetonate, VO(acac)2
  • vanadyl sulfate, VOSO4
  • vanadyl acetate, VO(CH3COO)2

Oxovanadium(V)

  • vanadyl isopropoxide, VO(O-iPr)3 (iPr denotes isopropyl)
  • vanadyl nitrate, VO(NO3)3
  • vanadyl perchlorate,
  • vanadyl fluoride,
  • vanadyl chloride,

References

References

  1. (July 1966). "Thermochemistry of Aqueous Pervanadyl and Vanadyl Ions". Inorg. Chem..
  2. (1962). "The Electronic Structure of the Vanadyl Ion". Inorganic Chemistry.
  3. (2002). "Paramagnetic spectroscopy of vanadyl compounds and its applications to biological systems". Coordination Chemistry Reviews.
  4. (2018). "Living with Oxygen". Accounts of Chemical Research.
  5. Ballhausen, C. J.. (1962-02-01). "The Electronic Structure of the Vanadyl Ion". Inorganic Chemistry.
  6. (2008). "Bioinorganic Vanadium Chemistry". John Wiley & Sons, Ltd.
  7. (April 1995). "Vibrational and electronic spectra of vanadyl nitrate, VO(NO3)3". Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.
  8. (July 2001). "Mononuclear Pervanadyl ({{chem". Zeitschrift für Anorganische und Allgemeine Chemie.
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oxycations vanadyl-compounds
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