p-Cymene Based Organometallic Ruthenium(II)-Arene Complexes with Benzaldehyde Derived Thiosemicarbazones: Synthesis, Characterization and Antimicrobial Activity

Abstract

Objective: Thiosemicarbazone (TSC) containing three new mononuclear ruthenium(II)-arene complexes were synthesized so as to contribute to the development of ruthenium complexes with pharmacologically attracted properties.Conclusion: The TSC 1-3 containing ruthenium(II)-arene complexes were successfully synthesized and their molecular structures were also determined by the spectroscopic methods. All ruthenium(II)-arene complexes showed higher antibacterial activities against Gram-positive bacterial strains than the Gram-negative ones. Original Article/Özgün AraştırmaKeywords: Half-sandwich Ru(II)-arene complexes, benzaldehyde thiosemicarbazone, p-cymene, antimicrobial activity, clinical isolate.Results: The spectroscopic data indicated that TSC 1 was bounded to the metal as a tridentate ligand with its thione sulfur atom, phenolic oxygen atom and azomethine nitrogen atom in the complex I, while TSC 2 and TSC 3 were bounded to metal center as bidentate manner through their thione sulfur atom and imine nitrogen (C=N) atom in the complexes II and III, respectively. The obtained antimicrobial activity results showed that these complexes efficiently inhibit the growth of Gram-positive bacterial strains.