Vanadium(III) chloride
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Vanadium(III) chloride describes the inorganic compound with the formula VCl3 and its hydrates. It forms a purple anhydrous form and a green hexahydrate [VCl2(H2O)4]Cl·2H2O. These hygroscopic salts are common precursors to other vanadium(III) complexes and is used as a mild reducing agent.[6]
Quick Facts Names, Identifiers ...
Anhydrous | |
Names | |
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IUPAC names
Vanadium(III) chloride Vanadium trichloride | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.028.859 |
EC Number |
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PubChem CID |
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RTECS number |
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UN number | 2475 |
CompTox Dashboard (EPA) |
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Properties | |
VCl3 | |
Molar mass | 157.30 g/mol |
Appearance | violet crystals (anhydrous) green crystals (hexahydrate)[1] |
Density | 2.8 g/cm3 (anhydrous) 1.84 g/cm3 (hexahydrate) |
Melting point | 350 °C (662 °F; 623 K)[2] (decomposes, anhydrous) |
soluble | |
+3030.0·10−6 cm3/mol | |
Structure | |
Trigonal, hR24[3] | |
R3, No. 148[3] | |
a = 6.012 Å, b = 6.012 Å, c = 17.34 Å (anhydrous) | |
Thermochemistry[4] | |
Heat capacity (C) |
93.2 J mol−1 K−1 |
Std molar entropy (S⦵298) |
131.0 J mol−1 K−1 |
Std enthalpy of formation (ΔfH⦵298) |
-580.7 kJ/mol |
Gibbs free energy (ΔfG⦵) |
-511.2 kJ/mol |
Hazards | |
GHS labelling:[5] | |
Danger | |
H302, H314 | |
P260, P264, P270, P280, P301+P312+P330, P301+P330+P331, P303+P361+P353, P304+P340+P310, P305+P351+P338+P310, P363, P405, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Safety data sheet (SDS) | Vanadium(III) Chloride |
Related compounds | |
Other anions |
Vanadium(III) fluoride Vanadium(III) bromide Vanadium(III) iodide |
Other cations |
Titanium(III) chloride Chromium(III) chloride Niobium(III) chloride Tantalum(III) chloride |
Related compounds |
Vanadium(II) chloride Vanadium(IV) chloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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