The Effects of Single- and Twin-Tailed Ionic Surfactants on the Hydroxydehalogenation of Charged Substrates

Abstract

Reactions of OH^- with 4-chloro-3,5-dinitrobenzoic and 2-chloro-3,5-dinitrobenzoic acids have been examined in solutions of cetyltrimethylammonium chloride, bromide and hydroxide, bis ( dodecyl ) dimethylammonium chloride, and bis(tetradecyl) dimethylammonium chloride. Rate effects were analysed quantitatively in terms of the distribution of reactants between water and the colloidal particles. It has been found that twin-tailed ionic surfactants better distinguish between favourable and unfavourable orientations of substrate molecules within micellar aggregates than do single-tailed ionic surfactants.