Abstract
A series of new zinc(II) and copper(II) complexes, [Zn2L(μ 2-η 1:η 1-OAc)2(OAc)(CH3OH)] (1), [Zn2Cl2L2] (2), [Zn2Br2L2] (3), [CuL(μ 1,3-N3)] n (4) and [Cu3(μ-Cl)2Cl2L2] (5), were prepared from the tridentate Schiff base 5-bromo-2((2-(dimethylamino)ethylimino)methyl)phenol (HL). The complexes were characterized by a variety of physicochemical techniques. Structures of the complexes were further confirmed by single crystal X-ray crystallography. The Zn ions in 1 are in octahedral and tetrahedral coordination. The Zn ions in 2 and 3 are in square pyramidal coordination. The Cu ion in 4 is in square pyramidal coordination. The Cu ions in 5 are in square pyramidal and square planar coordination. The Schiff base ligand coordinates to the metal ions through the phenolate O, and imino and amino N atoms. The complexes were evaluated for their antibacterial (Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Pseudomonas fluorescence) and antifungal (Candida albicans and Aspergillus niger) activities by the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) method.
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