Formula C2H4S Classification Volatile organic compound | Density 1.01 g/cm³ Appearance Pale, yellow liquid | |
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Thiirane, more commonly known as ethylene sulfide, is the cyclic chemical compound with the formula C2H4S. It is the smallest sulfur-containing heterocycle and the simplest episulfide. Like many organosulfur compounds, this species has a stench. Thiirane is also used to describe any derivative of the parent ethylene sulfide.
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Preparation
It is prepared by the reaction of ethylene carbonate and KSCN. For this purpose the KSCN is first melted under vacuum to remove water.
KSCN + C2H4O2CO → KOCN + C2H4S + CO2Reactions
Ethylenesulfide adds to amines to afford 2-mercaptoethylamines, which are good chelating ligands.
C2H4S + R2NH → R2NCH2CH2SHDithiiranes
Dithiiranes are three membered rings containing two sulfur atoms and one carbon. One example was prepared by oxidation of a 1,3-dithietane.
References
Thiirane Wikipedia(Text) CC BY-SA