Allene

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Properties Simple | Detailed

Formula C3H4
IUPAC Name allene
Molecular Mass 40.064 g·mol−1
Heat of Formation 154.2 ± 16.7 kJ·mol−1
Volume 68.4 Å 3
Surface Area 87.26 Å 2
HOMO Energy -10.40 ± 0.55 eV
LUMO Energy 3.96 ± eV
Point Group Symmetry D2d
Synonyms
  • 1,2-propadiene
  • carbon trimer
  • ch2=c=ch2
  • dimethylenemethane
  • propa-1,2-diene
  • propadiene
  • propadiene, inhibited [un2200] [flammable gas]
  • propadienylidene
  • sym-allylene
  • tricarbon
CAS Number(s)
  • 12075-35-3
  • 463-49-0
  • 6688-91-1
  • 60731-10-4
InChIKey IYABWNGZIDDRAK-UHFFFAOYSA-N
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Elements H C