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Vanadium(II) chloride

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Related compounds  vanadium(III) chloride
Molar mass  121.847 g/mol
Density  3.23 g/cm³
Pubchem  66355
Formula  VCl2
Boiling point  1,377 °C
Appearance  pale green solid
Vanadium(II) chloride

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.

Contents

Preparation, properties, and related compounds

Solid VCl2 is prepared by thermal decomposition of VCl3, which leaves a residue of VCl2:

2 VCl3 → VCl2 + VCl4

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.

Structure

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).

Vanadium dichloride is a powerful reducing species, being able to convert sulfoxides to sulfides, organic azides to amines, as well as reductively coupling some alkyl halides.

References

Vanadium(II) chloride Wikipedia


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