Tungsten trisulfide
Names
Other names
Tungsten(VI) sulphide, tris(sulfanylidene)tungsten
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 235-734-2
  • InChI=1S/3S.W
    Key: YMZATHYBBBKECM-UHFFFAOYSA-N
  • S=[W](=S)=S
Properties
WS3
Molar mass 280.038 g/mol
Appearance Brown solid
Related compounds
Related compounds
 Tungsten disulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Tungsten trisulfide is an inorganic compound of tungsten and sulfur with the chemical formula WS3.[1][2] The compound looks like chocolate-brown powder.[3][4]

Synthesis

  1. Bubbling hydrogen sulfide through hot acidified solution of tungstenates.[5]
  2. Reaction of tungsten disulfide and elemental sulfur on heating:[6]
  3. Precipitates upon acidification of thiotungstate solutions:[5]

Physical properties

Slightly soluble in cold water and forms colloidal solution in hot water.

Soluble in alkali metal carbonates and alkali metal hydroxides.[3]

Chemical properties

Tungsten trisulfide can be decomposed by heating into tungsten disulfide and elemental sulfur:

Reacts with sulfide solutions:

Reduced by hydrogen:

References

  1. ^ Scott, Robert A.; Jacobson, Allan J.; Chianelli, Russ R.; Pan, W. H.; Stiefel, Edward I.; Hodgson, Keith O.; Cramer, Stephen P. (1 April 1986). "Reactions of molybdenum trisulfide, tungsten trisulfide, tungsten triselenide, and niobium triselenide with lithium. Metal cluster rearrangement revealed by EXAFS". Inorganic Chemistry. 25 (9): 1461–1466. doi:10.1021/ic00229a032. ISSN 0020-1669. Retrieved 1 November 2021.
  2. ^ Hille, Russ; Schulzke, Carola; Kirk, Martin L. (29 September 2016). Molybdenum and Tungsten Enzymes: Bioinorganic Chemistry. Royal Society of Chemistry. p. 155. ISBN 978-1-78262-877-4. Retrieved 1 November 2021.
  3. ^ a b Kirk-Othmer Concise Encyclopedia of Chemical Technology, 2 Volume Set. John Wiley & Sons. 16 July 2007. p. 1122. ISBN 978-0-470-04748-4. Retrieved 1 November 2021.
  4. ^ "Tungsten trisulfide". National Institute of Standards and Technology. Retrieved 1 November 2021.
  5. ^ a b Zelikman, A. N.; Krein, O. E.; Samsonov, G. V. (1966) [1964]. Belyaevskaya, L. V. (ed.). Metallurgiya redkikh metallov [Metallurgy of Rare Metals]. Israel Program for Scientific Translations. Translated by Aladjem, A. (2nd ed.). Jerusalem: S. Monson / Wiener Bindery. p. 7. Retrieved 1 November 2021 – via Google Books.
  6. ^ "Tungsten Trisulfide-- Tungsten Trisulfide Professional Manufacturer and Supplier". tungsten-powder.com. Retrieved 1 November 2021.
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