Vanadium(II) chloride
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Names | |||
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IUPAC name Vanadium(II) chloride | |||
Other names Vanadous chloride | |||
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ECHA InfoCard | 100.031.057 | ||
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InChI
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Properties | |||
Chemical formula | 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) | ||
Solubility in water | soluble | ||
Magnetic susceptibility (χ) | +2410.0·10−6 cm3/mol | ||
Structure | |||
Crystal structure | CdI2 | ||
Coordination geometry | octahedral | ||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards | Reacts with oxygen rapidly | ||
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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). N verify (what is YN ?) Infobox references |
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]
Preparation, properties, and related compounds
Solid VCl2 is prepared by thermal decomposition of VCl3, which leaves a residue of VCl2:[2]
- 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.[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]
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).[5]
References
- ^ "Vanadium dichloride". pubchem.ncbi.nlm.nih.gov. Retrieved 12 December 2021.
- ^ a b Young, R. C.; Smith, M. E. "Vanadium(II) Chloride" Inorganic Syntheses, 1953, volume IV, page 126-127.doi:10.1002/9780470132357.ch42
- ^ Martin Pomerantz, Gerald L. Combs, N. L. Dassanayake, "Vanadium Dichloride Solution" Inorganic Syntheses, 1982, vol. XXI, pp. 185–187. doi:10.1002/9780470132524.ch42
- ^ Vanasse, Benoit; O'Brien, Michael K. (2001). "Vanadium(II) Chloride". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rv002. ISBN 0471936235.
- ^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
- v
- t
- e
- V(CO)6
- VF2
- VBr2
- VCl2
- VI2
- VO
- VS
- VSO4
- VBr3
- VCl3
- VF3
- VI3
- VN
- V2O3
- V2(SO4)3
- V2S3
Organovanadium(III) compounds |
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- VC
- VO2
- VOCl2
- V(S2)2
- VCl4
- VF4
Organovanadium(IV) compounds | |
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Vanadyl(IV) compounds |
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- V2O5
- VOCl3
- VOF3
- VO2F
- VF5
- VCl5
- NH4VO3
- VOPO4
- VO+2
Vanadyl(V) compounds |
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