| Vanadium(III) fluoride | |
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Other names
Vanadium fluoride, Vanadium trifluoride |
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| Identifiers | |
| CAS number | 10049-12-4 |
| PubChem | 66230 |
| ChemSpider | 16057827 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | VF3 |
| Molar mass | 107.9367 g/mol |
| Appearance | gray-green powder |
| Density | 3.363 g/cm3, solid |
| Melting point |
1406 °C |
| Solubility in water | insoluble |
| Structure | |
| Crystal structure | Rhombohedral, hR24 |
| Space group | R-3c, No. 167 |
| Hazards | |
| EU classification | not listed |
| NFPA 704 |
0
3
2
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| Related compounds | |
| Other anions | Vanadium(III) chloride Vanadium(III) oxide Vanadium(III) nitride |
| Other cations | Vanadium(IV) fluoride |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Vanadium(III) fluoride is the chemical compound with the formula VF3. This gray-green, refractory solid is obtained in a two-step procedure from V2O3.[1] The first step entails conversion to the hexafluorovanadate(III) salt using ammonium bifluoride:
In the second step, the hexafluorovanadate is thermally decomposed.
The thermal decomposition of ammonium salts is a relatively common method for the preparation of inorganic solids.
VF3 can also be prepared by treatment of V2O3 with HF. VF3 is a crystalline solid with 6 coordinate vanadium atoms with bridging fluorine atoms. The magnetic moment indicates the presence of two unpaired electrons.
Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Oxford: Butterworth-Heinemann. ISBN 0080379419.
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