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Names | |||
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IUPAC name Vanadium(II) chloride | |||
Other names Vanadous chloride | |||
Identifiers | |||
3D model (JSmol) | |||
ChemSpider | |||
ECHA InfoCard | 100.031.057 | ||
EC Number |
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PubChem CID | |||
RTECS number |
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UNII | |||
CompTox Dashboard (EPA) | |||
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Properties | |||
VCl2 | |||
Molar mass | 121.847 g/mol | ||
Appearance | pale green solid | ||
Density | 3.230 g/cm3 | ||
Melting point | 1,027 °C (1,881 °F; 1,300 K) | ||
Boiling point | 1,506 °C (2,743 °F; 1,779 K) | ||
soluble | |||
+2410.0·10−6 cm3/mol | |||
Structure | |||
CdI2 | |||
octahedral | |||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards | Reacts with oxygen rapidly | ||
GHS labelling: [1] | |||
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Danger | |||
H302, H314 | |||
P260, P264, P270, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P330, P363, P405 | |||
Related compounds | |||
Other anions | vanadium(II) fluoride, vanadium(II) bromide, vanadium(II) iodide | ||
Other cations | titanium(II) chloride, chromium(II) chloride | ||
Related compounds | vanadium(III) chloride | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Vanadium(II) chloride is the inorganic compound with the formula VCl2, and is the most reduced vanadium chloride. Vanadium(II) chloride is an apple-green solid that dissolves in water to give purple solutions. [2]
Solid VCl2 is prepared by thermal decomposition of VCl3, which leaves a residue of VCl2: [2]
VCl2 dissolves in water to give the purple hexaaquo ion [V(H2O)6]2+. Evaporation of such solutions produces crystals of [V(H2O)6]Cl2. [3]
Vanadium dichloride is used as a specialty reductant in organic chemistry. As an aqueous solution, it converts cyclohexylnitrate to cyclohexanone. It reduces phenyl azide into aniline. [4]
Solid VCl2 adopts the cadmium iodide structure, featuring octahedral coordination geometry. VBr2 and VI2 are structurally and chemically similar to the dichloride. All have the d3 configuration, with a quartet ground state, akin to Cr(III). [5]