The reaction of [RuCl2(p-cymene)]2 with in situ prepared Ag-N-heterocyclic carbene (NHC) complexes yields a series of [RuCl2(p-cymene) (NHC)] complexes 3. The structures of complexes were established by appropriate spectroscopic methods and elemental analyses.The biological activities of the synthesized ligands and their Ru (II) complexes as acetylcholinesterase, antimicrobial, and antioxidant age...