Synthesis and spectroscopic characterizations of Cu(II) complexes with novel 15‐membered N₄ macrocyclic ligand and their utility to obtain CuO nanostructures for efficient degradation of dyes

Abstract

This paper describes synthesis, characterization and application of a series of Cu(II) complexes with a novel 3-thioxo-[1,2,4,5]tetrazocane-6,8-dione (N 4 ) macrocyclic ligand. The complexes were characterized by physicochemical and spectroscopic techniques, such as UV-visible and IR spectroscopies, molar conductance, magnetic susceptibility measurements, and elemental analysis.The data suggest that the mononuclear Cu(II) complexes have a metal-to-ligand mole ratio of 1:1 and that the Cu(II) ions are coordinated with the four nitrogen atoms inside the N 4 macrocyclic ring. The experimental anisotropic g-values indicate that the chloro, nitrato, acetate, and perchlorato complexes have sixcoordinate distorted octahedral behavior, whereas the sulfato complex has five-coordinate square-pyramidal geometry. A simple and nontoxic method for preparation of CuO nanoparticles based upon the thermal decomposition of the synthesized Cu(II) complexes has been explored. Finally, the degradation of Rhodamine 6G dye by the catalytic performance of nano-sized CuO material has been evaluated.

Structurally diverse coordination compounds of zinc as effective precursors of zinc oxide nanoparticles with various morphologies

“…metal oxides, sulphides, halides, etc.) is promising and is a strongly developed direction of material science researches . The benefit of using coordination compounds results from the possibility to control both size and morphology of the nanoparticles by intentional modifications of a precursor structure .…”