Vanadium(III) oxide

Vanadium(III) oxide
Vanadium trioxide
Vanadium(III) oxide
Names
Other names
Vanadium sesquioxide, Vanadic oxide
Identifiers
CAS Number
  • 1314-34-7 checkY
3D model (JSmol)
  • Interactive image
ECHA InfoCard 100.013.847 Edit this at Wikidata
PubChem CID
  • 518710
RTECS number
  • YW3050000
UNII
  • Y469L16CWH checkY
CompTox Dashboard (EPA)
  • DTXSID90892259 Edit this at Wikidata
  • [O-2].[V+3].[O-2].[V+3].[O-2]
Properties
Chemical formula
 V2O3
Molar mass 149.881 g/mol
Appearance Black powder
Density 4.87 g/cm3
Melting point 1,940 °C (3,520 °F; 2,210 K)
Solubility in other solvents Insoluble
Magnetic susceptibility (χ)
 +1976.0·10−6 cm3/mol
Structure[1]
Crystal structure
 Corundum, hR30
Space group
 R3c (No. 167)
Lattice constant
a = 547 pm
α = 53.74°, β = 90°, γ = 90°
Thermochemistry
Std molar
entropy (S⦵298)
 98.07 J/mol·K [2]
Std enthalpy of
formation (ΔfH⦵298)
 -1218.800 kJ/mol [2]
-1139.052 kJ/mol [2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound

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.[3][4] It is a basic oxide dissolving in acids to give solutions of vanadium (III) complexes.[4] V2O3 has the corundum structure.[4] It is antiferromagnetic with a critical temperature of 160 K. [5] At this temperature there is an abrupt change in conductivity from metallic to insulating.[5] This also distorts the crystal structure to a monoclinic space group: C2/c.[1]

Upon exposure to air it gradually converts into indigo-blue V2O4.[5]

In nature it occurs as the rare mineral karelianite.[6]

References

  1. ^ a b Shvets, Petr; Dikaya, Olga; Maksimova, Ksenia; Goikhman, Alexander (2019-05-15). "A review of Raman spectroscopy of vanadium oxides". Journal of Raman Spectroscopy. 50 (8). Wiley: 1226–1244. Bibcode:2019JRSp...50.1226S. doi:10.1002/jrs.5616. ISSN 0377-0486. S2CID 182370875.
  2. ^ a b c R. Robie, B. Hemingway, and J. Fisher, “Thermodynamic Properties of Minerals and Related Substances at 298.15K and 1bar Pressure and at Higher Temperatures,” US Geol. Surv., vol. 1452, 1978.[1]
  3. ^ Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1267.
  4. ^ a b c Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  5. ^ a b c E.M. Page, S.A.Wass (1994),Vanadium:Inorganic and Coordination chemistry, Encyclopedia of Inorganic Chemistry, John Wiley & Sons, ISBN 0-471-93620-0
  6. ^ "Karelianite". www.mindat.org.
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Vanadium(0)
  • V(CO)6
Vanadium(II)
  • VF2
  • VBr2
  • VCl2
  • VI2
  • VO
  • VS
  • VSO4
Vanadium(III)
  • VBr3
  • VCl3
  • VF3
  • VI3
  • VN
  • V2O3
  • V2(SO4)3
  • V2S3
Organovanadium(III) compounds
  • V(C9H11)3
    • Vanadium(IV)
    • VC
    • VO2
    • VOCl2
    • V(S2)2
    • VCl4
    • VF4
    Organovanadium(IV) compounds
  • VO(C5H7O2)2
    • Vanadyl(IV) compounds
    • VOSO4
    Vanadium(V)
    • V2O5
    • VOCl3
    • VOF3
    • VO2F
    • VF5
    • VCl5
    • NH4VO3
    • VOPO4
    • VO+2
    Vanadyl(V) compounds
    • VO(ClO4)3
    • VO(NO3)3
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    Mixed oxidation states
    +1 oxidation state
    +2 oxidation state
    +3 oxidation state
    • Actinium(III) oxide (Ac2O3)
    • Aluminium oxide (Al2O3)
    • Americium(III) oxide (Am2O3)
    • Antimony trioxide (Sb2O3)
    • Arsenic trioxide (As2O3)
    • Berkelium(III) oxide (Bk2O3)
    • Bismuth(III) oxide (Bi2O3)
    • Boron trioxide (B2O3)
    • Caesium sesquioxide (Cs2O3)
    • Californium(III) oxide (Cf2O3)
    • Cerium(III) oxide (Ce2O3)
    • Chromium(III) oxide (Cr2O3)
    • Cobalt(III) oxide (Co2O3)
    • Dinitrogen trioxide (N2O3)
    • Dysprosium(III) oxide (Dy2O3)
    • Einsteinium(III) oxide (Es2O3)
    • Erbium(III) oxide (Er2O3)
    • Europium(III) oxide (Eu2O3)
    • Gadolinium(III) oxide (Gd2O3)
    • Gallium(III) oxide (Ga2O3)
    • Gold(III) oxide (Au2O3)
    • Holmium(III) oxide (Ho2O3)
    • Indium(III) oxide (In2O3)
    • Iron(III) oxide (Fe2O3)
    • Lanthanum oxide (La2O3)
    • Lutetium(III) oxide (Lu2O3)
    • Manganese(III) oxide (Mn2O3)
    • Neodymium(III) oxide (Nd2O3)
    • Nickel(III) oxide (Ni2O3)
    • Phosphorus trioxide (P4O6)
    • Praseodymium(III) oxide (Pr2O3)
    • Promethium(III) oxide (Pm2O3)
    • Rhodium(III) oxide (Rh2O3)
    • Samarium(III) oxide (Sm2O3)
    • Scandium oxide (Sc2O3)
    • Terbium(III) oxide (Tb2O3)
    • Thallium(III) oxide (Tl2O3)
    • Thulium(III) oxide (Tm2O3)
    • Titanium(III) oxide (Ti2O3)
    • Tungsten(III) oxide (W2O3)
    • Vanadium(III) oxide (V2O3)
    • Ytterbium(III) oxide (Yb2O3)
    • Yttrium(III) oxide (Y2O3)
    +4 oxidation state
    +5 oxidation state
    +6 oxidation state
    +7 oxidation state
    +8 oxidation state
    Related
    Oxides are sorted by oxidation state. Category:Oxides
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