Mononuclear arenes
Mononuclear arenes. Polynuclear arenes with condensed and isolated cycles. 1. The structure of benzene ring Arenes are hydrocarbons based on the benzene ring as a structural unit. Benzene, toluene, and naphthalene, for example, are arenes. One factor that makes conjugation in arenes special is its cyclic nature. A conjugated system that