Structure via PubChem · Public domain (PubChem)
cyclo[18]carbon
Sign in to saveAlso known as Cyclooctadeca-1,3,5,7,9,11,13,15,17-nonayne, C18, Cyclooctadecanonayne
Cyclooctadeca-1,3,5,7,9,11,13,15,17-nonayne or cyclo[18]carbon is an allotrope of carbon with molecular formula . The molecule is a ring of eighteen carbon atoms, connected by alternating triple and single bonds; thus, it is a polyyne and a cyclocarbon.
Chemical data
- Formula
- C18
- Molecular weight
- 216.2 g/mol
- IUPAC name
- cyclooctadecanonayne
- SMILES
- C1#CC#CC#CC#CC#CC#CC#CC#CC#C1
- InChIKey
- GPWDPLKISXZVIE-UHFFFAOYSA-N
- XLogP
- 3.5
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- cyclocarbon
- Mass
- 216.0
Show 3 more facts
- chemical formula
- C₁₈
- canonical SMILES
- C1#CC#CC#CC#CC#CC#CC#CC#CC#C1
- Commons category
- Cyclo(18)carbon
via Wikidata · CC0
~1 min read
Encyclopedic overview
1 sectionsContents
- References
Cyclooctadeca-1,3,5,7,9,11,13,15,17-nonayne or cyclo[18]carbon is an allotrope of carbon with molecular formula . The molecule is a ring of eighteen carbon atoms, connected by alternating triple and single bonds; thus, it is a polyyne and a cyclocarbon.
Cyclo[18]carbon is the smallest cyclo[n]carbon predicted to be relatively stable, with a computed strain energy of 72 kilocalories per mole.
Excerpted from Wikipedia’s “cyclo[18]carbon” article, available under the CC BY-SA 4.0 licence.