![cyclo[18]carbon](https://commons.wikimedia.org/wiki/Special:FilePath/Synthese%20C18.svg)
cyclo[18]carbon
Also 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.
Article
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.