Carbon monosulfide is a chemical compound with the formula CS. This diatomic molecule is the sulfur analogue of carbon monoxide, and is unstable as a solid or a liquid, but it has been observed as a gas both in the laboratory and in the interstellar medium.[1] The molecule resembles carbon monoxide with a triple bond between carbon and sulfur. The molecule is not intrinsically unstable, but it tends to polymerize. This tendency reflects the greater stability of C–S single bonds.
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Names | |||
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IUPAC name
carbon monosulfide
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Other names
carbon(II) sulfide, thiocarbonyl, sulfidocarbon, methanidylidynesulfanium
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Identifiers | |||
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3D model (JSmol)
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1697516, 1918616 | |||
ChEBI |
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ChemSpider |
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648 | |||
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |||
CS | |||
Molar mass | 44.07 g·mol−1 | ||
Appearance | reddish crystalline powder | ||
insoluble | |||
Related compounds | |||
Other anions
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Carbon monoxide | ||
Other cations
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Silicon monosulfide Germanium monosulfide Tin(II) sulfide Lead(II) sulfide | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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Polymers with the formula (CS)n have been reported,[2] and the formal dimer is ethenedithione. Also, CS has been observed as a ligand in some transition metal complexes.