Vanadium oxide may refer to:
*
Vanadium(II) oxide (vanadium monoxide), VO
*
Vanadium(III) oxide
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 ...
(vanadium sesquioxide ''or'' trioxide), V
2O
3
*
Vanadium(IV) oxide
Vanadium(IV) oxide or vanadium dioxide is an inorganic compound with the formula VO2. It is a dark blue solid. Vanadium(IV) dioxide is amphoteric, dissolving in non-oxidising acids to give the blue vanadyl ion, Osup>2+ and in alkali to give the b ...
(vanadium dioxide), VO
2
*
Vanadium(V) oxide
Vanadium(V) oxide (''vanadia'') is the inorganic compound with the formula V2 O5. Commonly known as vanadium pentoxide, it is a brown/yellow solid, although when freshly precipitated from aqueous solution, its colour is deep orange. Because ...
(vanadium pentoxide), V
2O
5
*
Vanadium(VI) oxide (vanadium hexoxide), a green oxide produced by a combination of hydrogen peroxide and vanadium metal
In addition to these principal oxides of vanadium, various other distinct phases exist:
* Phases with the general formula V
nO
2n+1 exist between V
2O
5 and VO
2. Examples of these phases include V
3O
7, V
4O
9 and V
6O
13.
* Phases with the general formula V
nO
2n−1 exist between VO
2 and V
2O
3.
Called Magnéli phases fo
Arne Magnéli they are examples of
crystallographic shear compounds based on the
rutile
Rutile is an oxide mineral composed of titanium dioxide (TiO2), the most common natural form of TiO2. Rarer polymorphs of TiO2 are known, including anatase, akaogiite, and brookite.
Rutile has one of the highest refractive indices at visib ...
structure
A structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. Material structures include man-made objects such as buildings and machines and natural objects such a ...
.
Examples of Magnéli phases include V
4O
7, V
5O
9, V
6O
11, V
7O
13 and V
8O
15.
* V
3O
5 appears as the mineral
oxyvanite.
Many vanadium-oxygen phases are
non-stoichiometric.
References
{{Chemistry index