Tungsten (III) chloride

Crystal structure
__ W 3+      __ Cl -
General
Surname	Tungsten (III) chloride
other names	Tungsten trichloride
Ratio formula	WCl 3
Brief description	black solid
External identifiers / databases
CAS number 20193-56-0 Wikidata Q13634859
properties
Molar mass	290.20 g mol −1
Physical state	firmly
Melting point	550 ° C (decomposition)
solubility	reacts with water
safety instructions
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 (III) chloride is an inorganic chemical compound of tungsten from the group of chlorides .

Extraction and presentation

Tungsten (III) chloride can be obtained by reacting tungsten (II) chloride with chlorine at 100 ° C.

${\displaystyle \mathrm {[W_{6}Cl_{8}]Cl_{4}+3\ Cl_{2}\longrightarrow [W_{6}Cl_{12}]Cl_{6}} }$

properties

Tungsten (III) chloride is a black solid that is soluble in warm dimethyl sulfoxide with a deep brown color. It has a trigonal crystal structure with the space group R 3 (space group no. 148) , a = 1491 pm, c = 845 pm. It is a hexameric structure [W ₆ Cl ₁₂ ] Cl ₆ , where the metal cluster [W ₆ Cl ₁₂ ] ^{6+ is} isostructural with the similar clusters of niobium and tantalum .

Individual evidence

1. ↑ ^{a b c d} Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1556.
2. ↑ ^{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).
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
4. ↑ Erwin Riedel, Christoph Janiak: Inorganic Chemistry . Walter de Gruyter, 2011, ISBN 3-11-022566-2 , p. 825 ( limited preview in Google Book search).