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Vanadium oxide
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<p>Vanadium oxide mainly refers to: </p> <ul><li><a href="/facts/Vanadium(II)_oxide/5b9whSBm">Vanadium(II) oxide</a> (vanadium monoxide), VO</li> <li><a href="/facts/Vanadium(III)_oxide/7IJ6LkgG">Vanadium(III) oxide</a> (vanadium sesquioxide <i>or</i> trioxide), V2O3</li> <li><a href="/facts/Vanadium(IV)_oxide/8rluh0VT">Vanadium(IV) oxide</a> (vanadium dioxide), VO2</li> <li><a href="/facts/Vanadium(V)_oxide/LPtvz4pq">Vanadium(V) oxide</a> (vanadium pentoxide), V2O5</li></ul> <p>Various other distinct phases include: </p> <ul><li>Phases with the general formula VnO2n+1 exist between V2O5 and VO2. Examples of these phases include V3O7, V4O9 and V6O13.</li> <li>Phases with the general formula VnO2n−1 exist between VO2 and V2O3. Called Magnéli phases for <a href="http://www.iucr.org/iucr-top/people/magneli.htm">Arne Magnéli</a>, they are examples of crystallographic shear compounds based on the <a href="/facts/Rutile/qwJH5ElN">rutile</a> <a href="/facts/Crystal_structure/bJ4bCeHd">structure</a>. Examples of Magnéli phases include V4O7, V5O9, V6O11, V7O13 and V8O15.</li> <li>V3O5 appears as the mineral oxyvanite.</li></ul> <p>Many vanadium-oxygen phases are <a href="/facts/Non-stoichiometric_compound/DAssoN0e">non-stoichiometric</a>. </p>