Thioformaldehyde

Thioformaldehyde
Names
IUPAC name
Thioformaldehyde
Systematic IUPAC name
Methanethial
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 200-454-1
  • InChI=1S/CH2S/c1-2/h1H2
    Key: DBTDEFJAFBUGPP-UHFFFAOYSA-N
  • C=S
Properties
CH2S
Molar mass 46.09
Appearance unknown
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Thioformaldehyde is the organosulfur compound with the formula CH2S. It is the simplest thioaldehyde. This compound is not observed in the condensed state (solid or liquid) because it oligomerizes to 1,3,5-trithiane, which is a stable colorless compound with the same empirical formula.

Despite the instability of these concentrated forms, thioformaldehyde as a dilute gas has been extensively studied. For these purposes, it is produced by thermal decomposition of dimethyl disulfide. The molecule has been observed in the interstellar medium and has attracted much attention for its fundamental nature. The tendency of thioformaldehyde to form chains and rings is a manifestation of the double bond rule.

Although thioformaldehyde tends to oligomerize, many metal complexes are known. One example is Os(SCH2)(CO)2(PPh3)2.

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