Chromium(II) sulfide

Chromium(II) sulfide
Identifiers
CAS Number	12018-06-3;
3D model (JSmol)	Interactive image;
ChemSpider	10129648;
PubChem CID	11955372;
CompTox Dashboard (EPA)	DTXSID10923256 ;
	InChI InChI=1S/Cr.S/q+2;-2 Key: LXEAUGDQDABWTN-UHFFFAOYSA-N;
	SMILES [S-2].[Cr+2];
Properties
Chemical formula	CrS
Molar mass	84.061 g/mol
Appearance	black crystals
Melting point	1,550 °C (2,820 °F; 1,820 K)
Solubility in water	insoluble
Related compounds
Related compounds	Chromium(III) sulfide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chromium(II) sulfide is an inorganic compound of chromium and sulfur with the chemical formula CrS.^[1]^[2]^[3] The compound forms black hexagonal crystals, insoluble in water.^[4]

Synthesis

Chromium(II) sulfide may be formed by reaction of chromium metal with sulfur or hydrogen sulfide at high temperature. It may also be formed by reacting chromium(III) chloride with H₂S, reducing chromium(III) sulfide with hydrogen, or by double replacement reaction of lithium sulfide with chromium(II) chloride.^[5]

{\ce {Cr + S -> CrS}}

{\ce {Cr + H2S -> CrS + H2}}

{\ce {2CrCl3 + 3H2S -> 2CrS + S + 6HCl}}

{\ce {Cr2S3 + H2 -> 2CrS + H2S}}

{\ce {Li2S + CrCl2 -> 2LiCl + CrS}}

Physical properties

Chromium(II) sulfide forms black paramagnetic crystals of two crystalline modifications:^[6]

α-CrS, superstructured phase, hexagonal system, cell parameters a = 1.200 nm, c = 1.152 nm.
β-CrS, monoclinic system, cell parameters a = 0.594 nm, b = 0.341 nm, c = 0.563 nm, β = 91.73°.

Chromium(II) sulfide is a semiconductor,^[7]^[8] and is also used as a catalyst.^[9]

Chemical properties

Chromium(II) sulfide slowly oxidizes in air:^{[citation needed]}

{\ce {2CrS + 7O2 -> 2Cr2O3 + 4SO2}}

References

^ Bretherick, L. (27 October 2016). Bretherick's Handbook of Reactive Chemical Hazards. Elsevier. p. 1074. ISBN 978-1-4831-6250-8. Retrieved 1 November 2021.
^ Wiberg, Egon; Holleman, A. F.; Wiberg, Nils (2001). Inorganic Chemistry. Academic Press. p. 1372. ISBN 978-0-12-352651-9. Retrieved 1 November 2021.
^ Sr, Richard J. Lewis (13 June 2008). Hazardous Chemicals Desk Reference. John Wiley & Sons. p. 670. ISBN 978-0-470-18024-2. Retrieved 1 November 2021.
^ Lide, David R. (26 June 2006). 1998 Freshman Achievement Award. CRC Press. p. 6-111. ISBN 978-0-8493-0594-8. Retrieved 1 November 2021.
^ Wadhawan, Amar R.; Livi, Kenneth J.; Stone, Alan T.; Bouwer, Edward J. (2015-03-17). "Influence of oxygenation on chromium redox reactions with manganese sulfide (MnS(s))". Environmental Science & Technology. 49 (6): 3523–3531. doi:10.1021/es5057165. ISSN 1520-5851. PMID 25688449.
^ PubChem (2002). "Chromium sulfide (CrS)". PubChem. 40 (1). National Library of Medicine: 24–26. PMID 11955372. Archived from the original on 2022-09-04. Retrieved 2022-09-04.
^ Riedel, Erwin; Janiak, Christoph (2011). Anorganische Chemie (in German). Walter de Gruyter. p. 732. ISBN 978-3-11-022566-2.
^ Holleman, A. F.; Wiberg, E.; Wiberg, N. (1995). Lehrbuch der Anorganischen Chemie. 101. Auflage (in German). Walter de Gruyter. p. 1451. ISBN 3-11-012641-9.
^ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3082. ISBN 978-0-412-30120-9. Retrieved 1 November 2021.

[1] Bretherick, L. (27 October 2016). Bretherick's Handbook of Reactive Chemical Hazards. Elsevier. p. 1074. ISBN 978-1-4831-6250-8. Retrieved 1 November 2021.

[2] Wiberg, Egon; Holleman, A. F.; Wiberg, Nils (2001). Inorganic Chemistry. Academic Press. p. 1372. ISBN 978-0-12-352651-9. Retrieved 1 November 2021.

[3] Sr, Richard J. Lewis (13 June 2008). Hazardous Chemicals Desk Reference. John Wiley & Sons. p. 670. ISBN 978-0-470-18024-2. Retrieved 1 November 2021.

[4] Lide, David R. (26 June 2006). 1998 Freshman Achievement Award. CRC Press. p. 6-111. ISBN 978-0-8493-0594-8. Retrieved 1 November 2021.

[5] Wadhawan, Amar R.; Livi, Kenneth J.; Stone, Alan T.; Bouwer, Edward J. (2015-03-17). "Influence of oxygenation on chromium redox reactions with manganese sulfide (MnS(s))". Environmental Science & Technology. 49 (6): 3523–3531. doi:10.1021/es5057165. ISSN 1520-5851. PMID 25688449.

[6] PubChem (2002). "Chromium sulfide (CrS)". PubChem. 40 (1). National Library of Medicine: 24–26. PMID 11955372. Archived from the original on 2022-09-04. Retrieved 2022-09-04.

[7] Riedel, Erwin; Janiak, Christoph (2011). Anorganische Chemie (in German). Walter de Gruyter. p. 732. ISBN 978-3-11-022566-2.

[8] Holleman, A. F.; Wiberg, E.; Wiberg, N. (1995). Lehrbuch der Anorganischen Chemie. 101. Auflage (in German). Walter de Gruyter. p. 1451. ISBN 3-11-012641-9.

[9] Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3082. ISBN 978-0-412-30120-9. Retrieved 1 November 2021.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]