Synthesis, structure and property of copper(II) complex with macrocyclic multidentate ligand

A novel coordination complex [Cu2L(4,4′-bpy)(H2O)](ClO4)4 · 3H2O was synthesized by treatment of Cu(ClO4)2 · 6H2O and 4,4′-bipyridine (4,4′-bpy) with a macrocyclic multidentate ligand L containing two diethylenetriamine units as coordination moieties and two biphenylene groups as rigid spacers. The compound was characterized by X-ray crystallography, electrospray mass spectroscopy (ES-MS), and its magnetic property was studied.