Vanadyl ion

The vanadyl cation, VO²⁺

Cavansite, a mineral containing the vanadyl cation that demonstrates its characteristic color

The vanadyl or oxovanadium(IV) cation, [VO]²⁺,^[1] is a blue-coloured vanadium oxocation at an oxidation state of 4+. It is one of the most stable diatomic ions known and forms a wide range of complexes.

Compounds containing the vanadyl ion

• vanadyl acetylacetonate, VO(acac)₂
• vanadyl sulfate pentahydrate, VOSO₄·5H₂O

Related species

• pervanadyl ion, [VO₂]⁺,^[1][2] also known as the dioxovanadium(V) ion ~(I:)
• vanadyl nitrate, VO(NO₃)₃^[3]
• metavanadate ion, [VO₃]_nⁿ⁻
• orthovanadate ion, [VO₄]³⁻
• thiovanadyl ion, [VS]²⁺

• titanyl ion, [TiO]²⁺

References

Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0080379419. 

1. ↑ 1.0 1.1 Bertrand, Gary L.; Stapleton, George W.; Wulff, Clause A.; Hepler, Loren G. (July 1966). "Thermochemistry of Aqueous Pervanadyl and Vanadyl Ions". Inorg. Chem. 5 (7): 1283–1284. doi:10.1021/ic50041a048.  |accessdate= requires |url= (help)
2. ↑ Satyanarayan, Pal; Kasiraman, Rinku Radhika (July 2001). "Mononuclear Pervanadyl (VO2+) Complexes with Tridentate Schiff Bases: Self-assembling via C–H…oxo and π-π Interactions". Zeitschrift für anorganische und allgemeine Chemie 627 (7): 1631–1637. doi:10.1002/1521-3749(200107)627:7<1631::AID-ZAAC1631>3.0.CO;2-H. Retrieved 26 September 2014. 
3. ↑ Varetti, E.L.; Brandán, S.A.; Ben Altabef, A. (April 1995). "Vibrational and electronic spectra of vanadyl nitrate, VO(NO3)3". Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 51 (4): 669–675. doi:10.1016/0584-8539(94)00154-4. Retrieved 26 September 2014.