Crystal structures, spectroscopic, electrochemical, and antibacterial properties of a series of new copper(II) Schiff base complexes

Abstract

Two new and two previously reported Schiff base ligands as well as four corresponding new Cu(II) complexes (CuL1-4) were synthesized and characterized. The Schiff base ligands were synthesized from condensation of 5-bromo-2-hydroxy-3-nitrobenzaldehyde with aliphatic (H2L1-2) or aromatic (H2L3-4) diamines. Crystal structures of CuL2 and CuL3 were determined by X-ray crystallography. Antibacterial properties of these ligands and complexes were studied against four human pathogenic bacteria. The complexes showed moderate antibacterial activities, higher than those of the ligands. © 2015 Taylor & Francis.