Ethynol

Ethynol
Structural formula of ethynol
Structural formula of ethynol
Spacefill model of ethynol
Spacefill model of ethynol
Names
Systematic IUPAC name
Ethynol[1]
Other names
Ynol, ethynyl alcohol, hydroxyacetylene
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C2H2O/c1-2-3/h1,3H ☒N
    Key: QFXZANXYUCUTQH-UHFFFAOYSA-N ☒N
  • OC#C
  • C#CO
Properties
C2H2O
Molar mass 42.037 g·mol−1
Density 0.981 g·cm-3
Boiling point 77.1 °C (170.8 °F; 350.2 K) @ 760mmHg
Hazards
Flash point 14.7 °C (58.5 °F; 287.8 K)
Thermochemistry
41.6 kJ mol−1
Related compounds
Related compounds
Propargyl alcohol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ethynol (or hydroxyacetylene, ethynyl alcohol) is an alkynealcohol (ynol) with the formula C2H2O. It is the much-less-stable tautomer of ethenone.

At low temperature in a solid argon matrix it is possible to tautomerise ethenone to form ethynol.[2][3]

  1. ^ "Ethynol". The PubChem Project. USA: National Center for Biotechnology Information.
  2. ^ Hochstrasser, Remo; Wirz, Jakob (1990). "Reversible Photoisomerisierung von Keten zu Ethinol". Angewandte Chemie. 102 (4): 454. Bibcode:1990AngCh.102..454H. doi:10.1002/ange.19901020438.
  3. ^ Hochstrasser, Remo; Wirz, Jakob (1989). "Ethinol: Photochemische Erzeugung in einer Argonmatrix, IR-Spektrum und Photoisomerisierung zu Keten". Angewandte Chemie. 101 (2): 183. Bibcode:1989AngCh.101..183H. doi:10.1002/ange.19891010209.