Vanadium oxydichloride

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-2 Key: DBTDJKFFLFILHF-UHFFFAOYSA-L;
	SMILES [O-2].[Cl-].[Cl-].[V+4];
Properties
Chemical formula	Cl2OV
Molar mass	137.84 g·mol−1
Appearance	Green solid
Density	2.88 g/cm3
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 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:^[1]

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.^[2]

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.^[3]

References

^ G. Brauer (1963). "Vanadium Oxydichloride". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. NY: Academic Press. p. 1263.
^ 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.
^ 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.

[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.

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