Vanadium (IV) oxide dichloride

General
Surname	Vanadium (IV) oxide dichloride
other names	Vanadium (IV) oxychloride
Molecular formula	VOCl 2
Brief description	green deliquescent solid
External identifiers / databases
EC number	233-517-7
ECHA InfoCard	100.030.457
PubChem	10176169
ChemSpider	8351674
Wikidata	Q4332877
properties
Molar mass	137.85 g mol −1
Physical state	firmly
density	2.88 g cm −3
Melting point	380 ° C (decomposition)
solubility	soluble in ethanol; Decomposes in water;
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Vanadium (IV) oxide dichloride is an inorganic chemical compound of vanadium from the group of oxychlorides .

Extraction and presentation

Vanadium (IV) oxide dichloride can be obtained by reacting vanadium (V) oxide with vanadium (III) chloride and vanadium (V) oxide trichloride .

{\ displaystyle \ mathrm {V_ {2} O_ {5} +3 \ VCl_ {3} + VOCl_ {3} \ longrightarrow 6 \ VOCl_ {2}}}

The representation by reaction of vanadium (III) oxychloride with vanadium (V) oxychloride is also possible.

properties

Vanadium (IV) oxide dichloride is a hygroscopic solid with shiny green crystals. Its crystal structure is orthorhombic with the space group Immm (space group no. 71) , a = 384.2 pm , b = 1176.1 pm, c = 338.3 pm. Aqueous hydrochloric acid solutions of vanadium (IV) oxide dichloride are obtained by dissolving vanadium (IV) chloride in water or by heating vanadium (V) oxide with excess concentrated hydrochloric acid and driving off most of the excess HCl by concentration. The splitting off of chlorine that takes place here can be greatly promoted by adding weak reducing agents such as alcohol or hydrogen sulfide . Template: room group / 71

use

Vanadium (IV) oxide dichloride is a powerful reducing agent and is used to purify hydrogen chloride from arsenic .

Individual evidence

↑ Entry on vanadium (IV) oxide dichloride in the GESTIS substance database of the IFA , accessed on February 28, 2017(JavaScript required) .
↑ ^a ^b ^c ^d Georg Brauer: Handbook of preparative inorganic chemistry . 3., reworked. Edition. tape III . Enke, Stuttgart 1981, ISBN 3-432-87823-0 , pp. 1416 .
↑ WM Haynes (Ed.): CRC handbook of chemistry and physics. A ready-reference book of chemical and physical data . founded by David R. Lide. 93rd edition. CRC Press, Boca Raton 2012, ISBN 978-1-4398-8049-4 , pp. 4–98 (English, limited preview in Google Book Search).
↑ ^a ^b ^c G. WA Milne: Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties . John Wiley & Sons, 2005, ISBN 0-471-73661-9 , pp. 663 ( limited preview in Google Book search).
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ Roger Blachnik (Ed.): Paperback for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 790 ( limited preview in Google Book search).

[GESTIS-1] Entry on vanadium (IV) oxide dichloride in the GESTIS substance database of the IFA , accessed on February 28, 2017(JavaScript required) .

[brauer-2] Georg Brauer: Handbook of preparative inorganic chemistry . 3., reworked. Edition. tape III . Enke, Stuttgart 1981, ISBN 3-432-87823-0 , pp. 1416 .

[W._M._Haynes,_David_R._Lide,_Thomas_J._Bruno-3] WM Haynes (Ed.): CRC handbook of chemistry and physics. A ready-reference book of chemical and physical data . founded by David R. Lide. 93rd edition. CRC Press, Boca Raton 2012, ISBN 978-1-4398-8049-4 , pp. 4–98 (English, limited preview in Google Book Search).

[G._W._A._Milne-4] G. WA Milne: Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties . John Wiley & Sons, 2005, ISBN 0-471-73661-9 , pp. 663 ( limited preview in Google Book search).

[NV-5] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Jean_d'._Ans,_Ellen_Lax,_Roger_Blachnik-6] Roger Blachnik (Ed.): Paperback for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 790 ( limited preview in Google Book search).