Tungsten trisulfide

Tungsten trisulfide  Names

Other names

Tungsten(VI) sulphide, tris(sulfanylidene)tungsten

Identifiers

CAS Number

* 12125-19-8

3D model (JSmol)

* Interactive image

ChemSpider |

* 9215149

EC Number |

* 235-734-2

PubChem CID

* 11039977

InChI

* InChI=1S/3S.W

Key: YMZATHYBBBKECM-UHFFFAOYSA-N

SMILES

* S=[W](=S)=S

Properties

Chemical formula

| 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).

Infobox references

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]

## Contents

* 1 Synthesis
* 2 Physical properties
* 3 Chemical properties
* 4 References

## Synthesis

1. Bubbling hydrogen sulfide through hot acidified solution of tungstenates.[5]
2. Reaction of tungsten disulfide and elemental sulfur on heating:[6] WSA2+S⟶WSA3
3. Precipitates upon acidification of thiotungstate solutions:[5] (NHA4)A2WSA4+HCl⟶WSA3+2NHA4Cl+HA2S NaA2WSA4+HA2SOA4⟶WSA3+NaA2SOA4+HA2S

## 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: WSA3⟶WSA2+S

Reacts with sulfide solutions: WSA3+(NHA4)A2S⟶(NHA4)A2WSA4

Reduced by hydrogen: WSA3+3HA2⟶W+3HA2S

## 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. https://pubs.acs.org/doi/abs/10.1021/ic00229a032. Retrieved 1 November 2021.
2. ↑ Hille, Russ; Schulzke, Carola; Kirk, Martin L. (29 September 2016) (in en). Molybdenum and Tungsten Enzymes: Bioinorganic Chemistry. Royal Society of Chemistry. p. 155. ISBN 978-1-78262-877-4. https://books.google.com/books?id=FRU0DQAAQBAJ&dq=Tungsten+trisulfide&pg=PA155. Retrieved 1 November 2021.
3. ↑ 3.0 3.1 (in en) Kirk-Othmer Concise Encyclopedia of Chemical Technology, 2 Volume Set. John Wiley & Sons. 16 July 2007. p. 1122. ISBN 978-0-470-04748-4. https://books.google.com/books?id=BYQfEAAAQBAJ&dq=Tungsten+trisulfide&pg=RA1-PA1122. Retrieved 1 November 2021.
4. ↑ "Tungsten trisulfide" (in en). National Institute of Standards and Technology. https://webbook.nist.gov/cgi/formula?ID=B8025276.
5. ↑ 5.0 5.1 Zelikman, A. N.; Krein, O. E.; Samsonov, G. V. (1966). Belyaevskaya, L. V.. ed. Metallurgiya redkikh metallov. Israel Program for Scientific Translations (2nd ed.). Jerusalem: S. Monson / Wiener Bindery. p. 7. https://books.google.com/books?id=zUwjAAAAMAAJ. Retrieved 1 November 2021.
6. ↑ "Tungsten Trisulfide-- Tungsten Trisulfide Professional Manufacturer and Supplier". tungsten-powder.com. http://www.tungsten-powder.com/tungsten-trisulfide.html.

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Sulfides

| H2S
H2S2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | He

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Li2S | BeS |  |  |  |  |  |  |  |  |  |  | B2S3 | CS2
COS | (NH4)SH | O | F | Ne
Na2S
Na2Sx | MgS |  |  |  |  |  |  |  |  |  |  | Al2S3 | SiS
SiS2 | PxSy | S | Cl | Ar
K2S | CaS | Sc2S3 | TiS2 | V | CrS
Cr2S3 | MnS
MnS2 | FeS
Fe3S4 | CoS | NiS | Cu2S
CuS | ZnS | GaS
Ga2S3 | GeS
GeS2 | As2S3
As4S3 | SeS2 | Br | Kr
Rb2S | SrS | Y2S3 | ZrS2 | NbS2 | MoS2 | Tc | Ru | Rh2S3 | PdS | Ag2S | CdS | In2S3 | SnS
SnS2 | Sb2S3
Sb2S5 | TeS2 | I | Xe
Cs2S | BaS | *  | HfS2 | TaS2 | WS2
WS3 | ReS2
Re2S7 | Os | Ir2S3
IrS2 | PtS
PtS2 | Au2S
Au2S3 | HgS | Tl2S | PbS
PbS2 | Bi2S3 | Po | At | Rn
Fr | Ra | **  | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og |  |  |  |  |  |  |  |
|  | ↓ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| * | La2S3 | CeS
Ce2S3 | Pr2S3 | Nd2S3 | Pm2S3 | SmS
Sm2S3 | Eu2S3 | Gd2S3 | Tb2S3 | Dy2S3 | Ho2S3 | Er2S3 | Tm2S3 | Yb2S3 | Lu2S3 |
| ** | Ac | ThS2 | Pa | US2 | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr |

* v
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* e

Tungsten compounds

Tungsten(0)|

* W(CO)6

Tungsten(II)|

* WSi2
* WCl2
* W(OH)2

Tungsten(III)|

* W2O3

Tungsten(IV)|

* WC
* WO2
* WS2
* WSe2
* WTe2
* WF4
* WCl4

Tungsten(V)|

* W2O5
* WBr5
* W2Cl10

Tungsten(VI)|

* H3PW12O40
* (NH4)10(H2W12O42)
* WO2Cl2
* WCl6
* WF6
* WN2
* WO3
* WS3
* WOBr4
* WOCl4
* WOF4
* H2WO4

| Organotungsten(VI) compounds|

* W(CH3)6

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