A series of seven different 1, 3-dialkylimidazolium-based ion-pair salts with the same molecular weight and size but different symmetries was synthesized. For all salts, bromide was chosen as the counterion, giving the series ([C n IMC m][Br]), where IM= imidazolium and C n and C m are varying N-alkyl substituents with n+ m= 13. The effect of symmetry on the physicochemical properties is investigated herein.
