Melting Behavior of Hydrocarbon Chain Molecules with Ionic End:Groups: Primary n-Alkylammonium Halides

Abstract

Abstract Stepwise melting behavior for a series of primary long chain n-alkylammonium chlorides was pointed out. A plastic phase, a smectic mesophase and a “clear” liquid possibly unisotropic were observed. The same trend seems to be common to other hydrocarbon molecules with ionic endgroups, including alkali metal n-alkanoates.