The conductivities for eighteen quatemary ammonium carboxylates inbutyrolactone have been measured at25Cwhich have been recently used as hgh performance liquid electrolytes in aluminum electrolytic capacitorsThe limiting molar conductivities and the ion association constants ofthese electfolytes were clculated by the Shedlovsky extrapolation methodThe single ion limiting molar conductivities of(arboxylate ions were248202and189S cm2mol 1for bimaleate biphthalate ImdbenzoateionrespectivelyThe singleionlimitingmolarconductivitiesof quatemary ammonium ions decreased in the orderMe4N231Me3EtN227Me2(CH2)4N223 Me Et N220MeEt N213Et N206S cm2mol The ion association constants increased 2 2 3 4
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Ue et al. (1993) studied this question.
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