Thermal properties and bromine addition reaction of ionic liquids containing vinyl-substituted bis-sulfonylamide anion

Solvent-free transformation of protic ionic liquids into zwitterions

“…We recently investigated the chemical reactivities of ILs with double bonds. 12,13 In this communication, we report a simple, direct conversion of protic ILs with vinyl substituents into ZIs. Protic ILs, produced by combining Brønsted acids and bases, are highly versatile in electrochemistry and organic reactions.…”

“…S2, ESI†). Upon cooling, 1 crystallized at −38 °C, and upon subsequent heating, it exhibited a solid phase transition at −5.3 °C (Δ H = 1.1 kJ mol −1 , Δ S = 4.3 J mol −1 K −1 ), and melted at 11.8 °C (Δ H m = 17.4 kJ mol −1 , Δ S m = 59.7 J mol −1 K −1 ), whereas 2 and 3 did not crystallize upon cooling and exhibited glass transitions at −88 °C 13 and −82 °C, respectively. 1 and 2 were hydrophilic and miscible with water (Fig.…”