Vanadium sesquioxide, Vanadic oxide
|Molar mass||149.881 g/mol|
|Melting point||1,940 °C (3,520 °F; 2,210 K)|
|Solubility in other solvents||Insoluble|
|Crystal structure||Trigonal (karelianite), hR30|
|Space group||R-3c h, No. 167|
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
|what is: / ?)(|
Vanadium(III) oxide is the inorganic compound with the formula V2O3. It is a black solid prepared by reduction of V2O5 with hydrogen or carbon monoxide.It is a basic oxide dissolving in acids to give solutions of vanadium(III) complexes. V2O3 has the corundum structure. It is antiferromagnetic with a critical temperature of 160 K.  At this temperature there is an abrupt change in conductivity from metallic to insulating.
In nature it occurs as the very rare mineral karelianite.
- Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1267.
- Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0080379419.
- E.M. Page, S.A.Wass (1994),Vanadium:Inorganic and Coordination chemistry, Encyclopedia of Inorganic Chemistry, John Wiley & Sons, ISBN 0-471-93620-0
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