Skip to content
ethynol

Structure via PubChem · Public domain (PubChem)

EntityQ1876754· pop 17· linked from 6 articles

Also known as hydroxyacetylene, ethynyl alcohol

Ethynol (or hydroxyacetylene, ethynyl alcohol) is an alkyne–alcohol (ynol) with the formula C2H2O. It is the much-less-stable tautomer of ethenone.

Chemical data

Formula
C2H2O
Molecular weight
42.04 g/mol
IUPAC name
ethynol
SMILES
C#CO
InChIKey
QFXZANXYUCUTQH-UHFFFAOYSA-N
XLogP
0.4
Polar surface area
20.2 Ų
H-bond donors
1
H-bond acceptors
1
Formal charge
0

via PubChem

Wikidata facts

Subclass of
ynol
Has part
hydrogen
Mass
42.04
Show 3 more facts
chemical formula
C₂H₂O
canonical SMILES
C#CO
Commons category
Ethynol
Sources (2)

via Wikidata · CC0

~1 min read

Encyclopedic overview

2 sections
Contents
  • See also
  • References

Ethynol (or hydroxyacetylene, ethynyl alcohol) is an alkyne–alcohol (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.

Excerpted from Wikipedia’s “ethynol” article, available under the CC BY-SA 4.0 licence.