Tungsten (III) iodide

General
Surname	Tungsten (III) iodide
other names	Tungsten triiodide
Ratio formula	WI 3
Brief description	black solid
External identifiers / databases
CAS number 15513-69-6 PubChem 12010987 Wikidata Q13826872
properties
Molar mass	564.6 g mol −1
Physical state	firmly
solubility	almost insoluble in 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) iodide is an inorganic chemical compound of tungsten from the group of iodides .

Extraction and presentation

Tungsten (III) iodide can be obtained by reacting tungsten hexacarbonyl with iodine at 120 ° C.

${\displaystyle \mathrm {2\ W(CO)_{6}+3\ I_{2}\longrightarrow 2\ WI_{3}+12\ CO} }$

properties

Tungsten (III) iodide is a black solid that gives off iodine even at room temperature. It is less stable than molybdenum (III) iodide and soluble in acetone and nitrobenzene as well as slightly soluble in chloroform .

use

Tungsten (II) iodide can be obtained by decomposition .

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

Individual evidence

1. ↑ ^{a b c d e} 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. 1564.
2. ↑ 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. 4–96 (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.