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Names | |||
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Preferred IUPAC name
Oxirene
[1] | |||
Systematic IUPAC name
Oxacyclopropene | |||
Other names
Epoxyethene
Ethyne oxide Acetylene oxide | |||
Identifiers | |||
3D model (
JSmol)
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ChEBI | |||
ChemSpider | |||
MeSH | C012469 | ||
PubChem
CID
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CompTox Dashboard (
EPA)
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Properties | |||
C2H2O | |||
Molar mass | 42.04 g/mol | ||
Related compounds | |||
Related molecules with 3-membered rings
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Ethylene oxide cyclopropane cyclopropene aziridine thiirane thiirene | ||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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Oxirene is a heterocyclic chemical compound which contains an unsaturated three-membered ring containing two carbon atoms and one oxygen atom. The molecule was synthesized in low temperature ices and detected upon sublimation by isomer selective photoionization reflectron time-of-flight mass spectrometry. [2]
Quantum chemical computational techniques found the configuration to be extremely strained and proposed an antiaromatic 4π electron system, as such oxirene is expected to be very high energy. [3] [4]
Experimental indications exist that substituted oxirenes (as intermediates or transition states) may be involved in carbonylcarbene rearrangements observed in the Wolff rearrangement. [5] Computational evidence also point to the intermediacy of oxirenes in the ozonolysis of alkynes. [6]