Abstract

A series of mononuclear Ni(II), Co(III), and Zn(II) complexes based on a Schiff base ligand, 4-chloro-6-[2-(pyrazin-2-ylmethylene)hydrazinyl]pyrimidine (HL), have been synthesized and characterized by physicochemical and spectroscopic methods. The complexes were found to have superior radical scavenging potency against DPPH, superoxide anion, hydroxyl, and ABTS radicals than free HL. The antibacterial effects of the complexes against Gram-positive and Gram-negative bacteria were also higher than that of free HL.

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