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Vanadium oxydichloride

Names
Other names Vanadyl dichloride
Identifiers
CAS Number	10213-09-9
3D model (JSmol)	Interactive image
ChemSpider	8351674
ECHA InfoCard	100.030.457
EC Number	233-517-7
PubChem CID	10176169
UNII	ET7948FWOY
CompTox Dashboard (EPA)	DTXSID0074429
InChI InChI=1S/2ClH.O.V/h2*1H;;/q;;-2;+4/p-2Key: DBTDJKFFLFILHF-UHFFFAOYSA-L
SMILES ...
Properties
Chemical formula	Cl2OV
Molar mass	137.84 g·mol
Appearance	Green solid
Density	2.88 g/cm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Vanadium oxydichloride is the inorganic compound with the formula VOCl₂. One of several oxychlorides of vanadium, it is a hygroscopic green solid. It is prepared by comproportionation of vanadium trichloride and vanadium(V) oxides:

V₂O₅ + VOCl₃ + 3 VCl₃ → 6 VOCl₂

As verified by X-ray crystallography, vanadium oxydichloride adopts a layered structure, featuring octahedral vanadium centers linked by doubly bridging oxide and chloride ligands.

From VOCl₂, various blue or green-colored oxotri- and oxotetrachloride salts can be prepared. Examples include N(CH₃)₄VOCl₃ and the pyridinium derivative (C₅H₅NH)₂VOCl₄.

References

1. G. Brauer (1963). "Vanadium Oxydichloride". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. NY: Academic Press. p. 1263.
2. Seifert, H. J.; Uebach, J. (1981). "Beitrage zur Chemie und Struktur von Vanadylhalogeniden". Zeitschrift für anorganische und allgemeine Chemie. 479 (8): 32–40. doi:10.1002/zaac.19814790804.
3. Kilty, P. A.; Nicholls, D. (1966). "The preparation and spectral properties of complex oxochlorovanadates(IV)". Journal of the Chemical Society A: Inorganic, Physical, Theoretical: 1175. doi:10.1039/J19660001175.

• Vanadium(IV) compounds
• Oxychlorides
• Metal halides