Vanadium(II) chloride
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Names | |||
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IUPAC name
Vanadium(II) chloride
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Other names
Vanadous chloride
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Identifiers | |||
3D model (JSmol)
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ChemSpider | |||
ECHA InfoCard | 100.031.057 ![]() | ||
EC Number |
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PubChem CID
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RTECS number |
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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 | |||
Main hazards | Reacts with oxygen rapidly | ||
GHS labelling:[1] | |||
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Signal word
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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
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, vanadium(II) bromide, vanadium(II) iodide | ||
Other cations
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titanium(II) chloride, chromium(II) chloride | ||
Related compounds
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vanadium(III) 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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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]
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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]
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).[4]
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 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
- ^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
- Vanadium compounds
- Chlorides
- Metal halides