Synthesis, Characterization, Thermal Properties, and Antimicrobial Activities of 5-(Diethylamino)-2-(5-nitro-1H-benzimidazol-2-yl)phenol and Its Transition Metal Complexes

摘要

Synthesis and antimicrobial activities of new metal [Co(II), Cu(II), Ni(II), and Fe(II)] complexes from 5-(diethylamino)-2-(5-nitro-1H-benzimidazol-2-yl)phenol are described. The newly synthesized ligands were characterized by IR,1H NMR, and LC-MS analysis, and metal-ligand complex formations were confirmed by using atomic absorption spectroscopy and elemental analysis. All complexes show significant in vitro antibacterial activities againstE. coliandS. aureusstrains and in vitro antifungal activity againstC. albicansandA. nigerstrains by using serial dilution method. The antibacterial activities were expressed as the minimum inhibitory concentration (MIC) inμg/mL. Thermal properties and electrochemical behavior of novel transition metal complexes have been studied.