Germanium monosulfide

Chemical compound From Wikipedia, the free encyclopedia

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

Quick facts Names, Identifiers ...
Germanium monosulfide
Names
Systematic IUPAC name
Germanium(II) sulfide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.536 Edit this at Wikidata
  • InChI=1S/GeS/c1-2
    Key: VDNSGQQAZRMTCI-UHFFFAOYSA-N
  • S=[Ge]
Properties
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).
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Preparation

First made by Winkler by reducing GeS2 with Ge.[2] Other methods include reduction in a stream of H2 gas,[2] or with an excess of H3PO2 followed by vacuum sublimation.[1]

Structure

It has a layer structure similar to that of black phosphorus.[1] The Ge-S distances range from 247 to 300 pm.[2] Molecular GeS in the gas phase has a Ge-S bond length of 201.21 pm.[5]

References

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