Ionic compound with low melting point has cation of the onium type with at least one heteroatom such as N, O, S or P; and anion which includes, wholly or partially, at least one imide ion. Independent claims are also included for: (1) electrolytic composit...

New ionic compounds corresponding to the formula (R1X1(=Z1)Q-X2(=Z2)R2)m Mm (I) :- M = a proton or metallic cation of valence m chosen from alkali, alkaline earth, transition, rare earth metals or an organic onium cation or organo-metallic cation ;m is gre...