Monotetrapolyhexes representing the biphenylenoid hydrocarbons

摘要

An extensive report on polytetrapolyhexes is presented. These systems, consisting of one tetragon and otherwise hexagons, correspond to biphenylenoid hydrocarbons. Invariants are treated with emphasis on the chemical for- mula C_mH_s different classes of biophenylenoids are defined: extremal, circumextremal, circular. Numbers of C_nH_s isomers of biphenylenoids were produced, both by hand and by compute programming. These numbers Contain information on constant-isomoer series, which were detected for thee systems.