Tungsten (IV) chloride

Crystal structure
	__ W 4+ __ Cl -
General
Surname	Tungsten (IV) chloride
other names	Tungsten tetrachloride
Ratio formula	WCl 4
Brief description	black solid
External identifiers / databases
EC number	629-145-3
ECHA InfoCard	100.157.353
PubChem	139468
Wikidata	Q4498196
properties
Molar mass	325.65 g mol −1
Physical state	firmly
density	4.62 g cm −3
Melting point	450 ° C (decomposition)
solubility	reacts with 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 .

Tungsten (IV) chloride is an inorganic chemical compound of tungsten from the group of chlorides .

Extraction and presentation

Tungsten (IV) chloride can be obtained by reacting tungsten (VI) chloride with aluminum , tetrachloroethene or tungsten hexacarbonyl .

{\ displaystyle \ mathrm {3 \ WCl_ {6} +2 \ Al \ longrightarrow 3 \ WCl_ {4} +2 \ AlCl_ {3}}}

{\ displaystyle \ mathrm {2 \ WCl_ {6} + W (CO) _ {6} \ longrightarrow 3 \ WCl_ {4} +6 \ CO}}

properties

Tungsten (IV) chloride is a black diamagnetic solid that is sensitive to hydrolysis . When heated, it decomposes above 450 ° C to tungsten (II) chloride and tungsten (V) chloride . It has an orthorhombic crystal structure isotypic to that of niobium (IV) chloride (a = 807 pm, b = 889 pm, c = 685 pm). It is sensitive to air and moisture, but can be kept indefinitely under a nitrogen atmosphere. Tungsten (IV) chloride is insoluble in organic solvents.

use

Tungsten (IV) chloride can be used to produce other tungsten (IV) compounds as well as compounds that contain a fourfold tungsten-tungsten compound [WCl ₄ ] _x .

Individual evidence

↑ ^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. 1556 .
↑ ^a ^b W. M. 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. 4–96 (English, limited preview in Google Book Search).
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. CRC Press, 2009, ISBN 978-1-4200-9084-0 .
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ ^a ^b ^c Herbert D. Kaesz: Inorganic Syntheses . John Wiley & Sons, 2009, ISBN 0-470-13292-2 , pp. 222 ( limited preview in Google Book search).

[brauer-1] Georg Brauer: Handbook of preparative inorganic chemistry . 3., reworked. Edition. tape III . Enke, Stuttgart 1981, ISBN 3-432-87823-0 , pp. 1556 .

[W._M._Haynes-2] W. M. 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. 4–96 (English, limited preview in Google Book Search).

[crc-3] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. CRC Press, 2009, ISBN 978-1-4200-9084-0 .

[NV-4] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Herbert_D._Kaesz-5] Herbert D. Kaesz: Inorganic Syntheses . John Wiley & Sons, 2009, ISBN 0-470-13292-2 , pp. 222 ( limited preview in Google Book search).