Synthesis, structure and catalase-like activity of new dicopper(II) complexes with phenylglyoxylate and benzoate ligands

Dimeric Cu 2(bpy) 2(phga) 4 and Cu 2(ba) 4(bpy) 2 complexes were isolated and characterized. Single crystal X-ray structure of the Cu 2(bpy) 2(phga) 4 complex is also reported. These complexes were found to present catalase-like activity. ▪ The preparation and characterization of dimeric Cu 2(bpy) 2(phga) 4 (bpy: 2,2′-bipyridine; phgaH: phenylglyoxylic acid) and Cu 2(ba) 4(bpy) 2 (baH: benzoic acid) complexes are described. Crystallographic characterization of the Cu 2(bpy) 2(phga) 4 complex has shown that the coordination geometry around copper(II) ions is distorted square pyramidal (monoclinic, P21/ c, a = 11.7440(4) Å, b = 20.9020(10) Å, c = 9.3980(10) Å, α = 90.00°, β = 93.2240(10)°, γ = 90.00°, V = 2303.3(3) Å 3, Z = 4). These complexes were found to exhibit catalase-like activity.