Synthesis, crystal structures, and superoxide dismutase activity of two isostructural copper(II)-zinc(II) complexes derived from A^,A^-bis(4-methoxysalicylidene) cy clohexane-1,2-diamine

摘要

Two new isostructural copper(ΙΙ))-zinc(II) complexes, [CuZnLBr_2] (1) and [CuZnLCl_2 (2) (H_2L=N',N'-bis(4-methoxysalicylidene)cyclohexane-l,2-diamine), have been synthesized and characterized by elemental analyses, infrared spectroscopy, and single-crystal X-ray diffraction. Both complexes crystallize in the P-l space group. The Cu in each complex is four-coordinate square planar with two imines and two phenolates of L. The Zn in each complex is four-coordinate tetrahedral with two phenolates of L and two halides (Br for 1 and C for 2). The superoxide dismutase (SOD) activity of the complexes indicates that both complexes are rudimentary models for SOD.