Dicationic ionic liquids present a novel class of ionic liquids composed of a dication and two monoanions, the latter have shown an increasing interest in recent years and they used in numerous applications.

In comparison with conventional ionic liquids, the physicochemical properties of dicationic ionic liquids can be adjusted by modifying the languor and the type of chains connecting the cationic heads as well as the type of cation. This could give rise to symmetrical or asymmetrical dicationic ionic liquids.

In this work, we present a new synthesis of three imidazolium based dicationic ionic liquids, with two stages, the first is a quaternization reaction or the first dicationic ionic liquid was obtained with iodide ion.

The characterization of the dicationic ionic liquids was carried out by magnetic resonance spectroscopy allowing better identification of the products obtained.