Abstract
Two azido-coordinated Schiff base Cu(II) complexes with the formulae [Cu(L1)(N3)]·MeOH and [Cu(L2)(μ1,1-N3)] n , where L1 is the deprotonated form of 2-chloro-2-[(2-ethylaminoethylimino)methyl]phenol, and L2 is the deprotonated form of 2,4-dibromo-6-[(2-dimethylaminoethylimino)methyl]phenol, have been synthesized and characterized by physico-chemical and spectroscopic methods. The X-ray crystal structures of both complexes have been determined. The Cu atom in [Cu(L1)(N3)]·MeOH is four-coordinate in a square planar geometry, while [Cu(L2)(μ1,1-N3)] n is five-coordinate with a square pyramidal geometry. The molecules in [Cu(L1)(N3)]·MeOH are linked by intermolecular O–H···O and N–H···O hydrogen bonds, forming dimers. The molecules in [Cu(L2)(μ1,1-N3)] n are linked through end-on azido bridges, forming one-dimensional chains. The xanthine oxidase inhibitory activities of both complexes were evaluated.
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