|
Benzotriyne
Benzotriyne or cyclo arbon is a hypothetical compound, an allotrope of carbon with molecular formula . The molecule is a ring of six carbon atoms, connected by alternating triple and single bonds. It is, therefore, a potential member of the cyclo 'n''arbon family. There have been a few attempts to synthesize benzotriyne, e.g. by pyrolysis of mellitic anhydride, but without success . Recent investigations have concluded that benzotriyne is unlikely to exist due to the large angle strain. A likely alternative isomer would be a cyclic cumulene called cyclohexahexaene, which should itself be a metastable species. The name ''cracatene'' was suggested for this compound (after Karel Čapek's Krakatit ''Krakatit'' is a 1948 Czechoslovak science fiction mystery film directed by Otakar Vávra, starring Karel Höger as a chemist who suffers from delirium and regret after inventing a powerful explosive. The film is based on Karel Čapek's novel wit ..., a hypothetical explosive). Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclocarbons
In organic chemistry, a cyclo 'n''arbon (or simply cyclocarbon) is a chemical compound consisting solely of a number ''n'' of carbon atoms covalently linked in a ring. Since the compounds are composed only of carbon atoms, they are allotropes of carbon. Possible bonding patterns include all double bonds (a cyclic cumulene) or alternating single bonds and triple bonds (a cyclic polyyne). As of 2020, the only cyclocarbon that has been synthesized is cyclo 8arbon. Cyclo arbon The (hypothetical) three-carbon member of this family () is also called cyclopropatriene. Cyclo arbon The (hypothetical) six-carbon member of this family () is also called benzotriyne. Cyclo 8arbon The smallest cyclo 'n''arbon predicted to be thermodynamically stable is C18, with a computed strain energy of 72 kilocalories per mole. An IBM/Oxford team claimed to synthesize its molecules in solid state in 2019: According to these IBM researchers, the synthesized cyclocarbon has alternating triple a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
