Abstract
Five copper(II), zinc(II) and nickel(II) complexes, [Cu2L2(μ 1,1-N3)2] (1), [Zn2L2(μ 2-η 1:η 1-CH3COO)(NCS)]EtOH (2), [Zn2L2(μ 2-η 1:η 1-CH3COO)(N3)]MeOH (3), [Zn2Cl2L2] (4) and [NiL(HL)]ClO4 (5), were prepared from the Schiff base 3-methyl-2-((pyridin-2-ylmethylene)amino)phenol (HL). The compounds have been characterized by physico-chemical methods including elemental analysis, IR, and UV–Vis spectra. Structures of the five new complexes were determined by single crystal X-ray diffraction. The copper ions in 1 are in square pyramidal, while zinc ions in 2, 3, and 4 are distorted square pyramidal, and the nickel ions in 5 are octahedral. The biological assay indicated that zinc complex 2 has the most effective activity on Jack bean urease with IC50 = 1.7 ± 0.8 μmol·L−1. Molecular docking was performed to study the interaction between the active center of the urease with molecules of the complexes.
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