Germanium monosulfide

Germanium monosulfide
Names
	Systematic IUPAC name Germanium(II) sulfide
Identifiers
CAS Number	12025-32-0;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.031.536
PubChem CID	6367215;
CompTox Dashboard (EPA)	DTXSID20923282 ;
	InChI InChI=1S/GeS/c1-2 Key: VDNSGQQAZRMTCI-UHFFFAOYSA-N;
	SMILES S=[Ge];
Properties
Chemical formula	GeS
Molar mass	104.69 g·mol−1
Related compounds
Related compounds	Carbon monosulfide; Germanium monoxide; Germanium disulfide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Germanium monosulfide or Germanium(II) sulfide is the chemical compound with the formula Ge S. It is a chalcogenide glass and a semiconductor.^[1] Germanium sulfide is described as a red-brown powder or black crystals.^[2] Germanium(II) sulfide when dry is stable in air, hydrolyzes slowly in moist air but rapidly reacts in water forming Ge(OH)₂ and then GeO.^[3] It is one of a few sulfides that can be sublimed under vacuum without decomposition.^[4]

Preparation

First made by Winkler by reducing GeS₂ with Ge.^[3] Other methods include reduction in a stream of H₂ gas,^[3] or with an excess of H₃PO₂ followed by vacuum sublimation.^[2]

Structure

It has a layer structure similar to that of black phosphorus.^[2] The Ge-S distances range from 247 to 300 pm.^[3] Molecular GeS in the gas phase has a Ge-S bond length of 201.21 pm.^[5]

References

^ Sutter, Eli; Zhang, Bo; Sun, Muhua; Sutter, Peter (2019-08-27). "Few-Layer to Multilayer Germanium(II) Sulfide: Synthesis, Structure, Stability, and Optoelectronics". ACS Nano. 13 (8): 9352–9362. doi:10.1021/acsnano.9b03986. ISSN 1936-0851. PMID 31305983.
^ ^a ^b ^c Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
^ ^a ^b ^c ^d E. G. Rochow, E. W. Abel ,1973, The Chemistry of Germanium Tin and Lead, Pergamon Press, ISBN 0-08-018854-0
^ Michael Binnewies, Robert Glaum, Marcus Schmidt, Peer Schmidt, 2012, Chemical Vapor Transport Reactions, De Gruyter, ISBN 978-3-11-025464-8
^ Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.

[1] Sutter, Eli; Zhang, Bo; Sun, Muhua; Sutter, Peter (2019-08-27). "Few-Layer to Multilayer Germanium(II) Sulfide: Synthesis, Structure, Stability, and Optoelectronics". ACS Nano. 13 (8): 9352–9362. doi:10.1021/acsnano.9b03986. ISSN 1936-0851. PMID 31305983.

[Greenwood-2] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

[Rochow-3] E. G. Rochow, E. W. Abel ,1973, The Chemistry of Germanium Tin and Lead, Pergamon Press, ISBN 0-08-018854-0

[4] Michael Binnewies, Robert Glaum, Marcus Schmidt, Peer Schmidt, 2012, Chemical Vapor Transport Reactions, De Gruyter, ISBN 978-3-11-025464-8

[5] Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.

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