Vanadium(III) oxide

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Template:Chembox 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.[1][2] It is a basic oxide dissolving in acids to give solutions of vanadium (III) complexes.[2] V2O3 has the corundum structure.[2] It is antiferromagnetic with a critical temperature of 160 K, below which there is an abrupt change in conductivity from metallic to insulating.[3] This also distorts the crystal structure to a monoclinic space group: C2/c.[4]

Upon exposure to air it gradually converts into indigo-blue V2O4.[3]

In nature it occurs as the rare mineral karelianite.[5]

References

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  1. Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1267.
  2. a b c Template:Greenwood&Earnshaw
  3. a b E.M. Page, S.A.Wass (1994),Vanadium:Inorganic and Coordination chemistry, Encyclopedia of Inorganic Chemistry, John Wiley & Sons, Template:ISBN
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