“…The scope of their application is now broader and covers their use as reaction media, fuel cells, optical fluids, solar cells, energetic materials, heat transfer fluids, and lubricants, to name only a few . The properties of imidazolium/pyridinium salt are varied with different counter anions, which can enhance or suppress the catalytic activities. − Pyrazole and its derivatives have emerged as important compounds among the other heterocyclic compounds due to their medicinal properties like anti-inflammatory, , analgesic, , antimicrobial, anticancer, antiviral, antipyretic, and antianxiety activities, and some of the reports proved that adding other materials like nitrogen-containing phosphane , and ligands , to pyrazolium/pyridinium , and imidazolium − can give more stability to the compound, which are recyclable catalytic moieties. The drug discovery and evolution process aims at finding a compound, possessing good pharmacodynamic and pharmacokinetic properties.…”