Names | |
---|---|
IUPAC name
Vanadium(II) oxide
| |
Other names
Vanadium oxide
| |
Identifiers | |
3D model (JSmol)
|
|
ECHA InfoCard | 100.031.655 |
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
| |
Properties | |
VO | |
Molar mass | 66.9409 g/mol |
Appearance | grey solid with metallic lustre |
Density | 5.758 g/cm3 |
Melting point | 1,789 °C (3,252 °F; 2,062 K) |
Boiling point | 2,627 °C (4,761 °F; 2,900 K) |
Refractive index (nD)
|
1.5763 |
Structure | |
Halite (cubic), cF8 | |
Fm3m, No. 225 | |
Octahedral (V2+) Octahedral (O2−) | |
Thermochemistry | |
Std molar
entropy (S⦵298) |
39.01 J/mol·K[1] |
Std enthalpy of
formation (ΔfH⦵298) |
-431.790 kJ/mol[1] |
Gibbs free energy (ΔfG⦵)
|
-404.219 kJ/mol[1] |
Hazards | |
Flash point | Non-flammable |
Related compounds | |
Other anions
|
Vanadium monosulfide Vanadium monoselenide Vanadium monotelluride |
Other cations
|
Niobium(II) oxide Tantalum(II) oxide |
Vanadium(III) oxide Vanadium(IV) oxide Vanadium(V) oxide | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
Vanadium(II) oxide is the inorganic compound with the idealized formula VO. It is one of the several binary vanadium oxides. It adopts a distorted NaCl structure and contains weak V−V metal to metal bonds. VO is a semiconductor owing to delocalisation of electrons in the t2g orbitals. VO is a non-stoichiometric compound, its composition varying from VO0.8 to VO1.3.[2]
Diatomic VO is one of the molecules found in the spectrum of relatively cool M-type stars.[3] A potential use of vanadium(II) monoxide is as a molecular vapor in synthetic chemical reagents in low-temperature matrices.[4]
References[edit]
- ^ 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.
- ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 982. ISBN 978-0-08-037941-8.
- ^ Tsuji, T. (1986). "Molecules in Stars". Annu. Rev. Astron. Astrophys. 24: 94. Bibcode:1986ARA&A..24...89T. doi:10.1146/annurev.aa.24.090186.000513.
- ^ Groshens, Thomas J.; Klabunde, Kenneth J. (August 1990). "Molecular vapor synthesis: the use of titanium monoxide and vanadium monoxide vapors as reagents". Inorganic Chemistry. 29 (16): 2979–2982. doi:10.1021/ic00341a025. ISSN 0020-1669.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction