SEARCH Articles Figures Tables Alternant hydrocarbon Alternate hydrocarbon Alternating hydrocarbons Betain Betaine Betaines, heterocyclic derivatives of alternant hydrocarbons Betaines, heterocyclic, derivatives alternant hydrocarbons Heterocyclic Betaines Isoelectronic with Even Alternant Hydrocarbon Dianions Ramsden, C. A., Heterocyclic: Betaine Derivatives of Alternant Hydrocarbons The Chemistry of Heterocyclic Betaines Derived from Even Alternant Hydrocarbon Dianions