Synthesis and spectroscopic studies of dinuclear copper(II) complexes with new pendant-armed macrocyclic ligands

Three dinuclear CuII perchlorate complexes of macrocyclic ligands derived from the condensation of sodium 4-X-2,6-diformylphenolate (X=Me, Cl or But) with 1,5-diamino-3-(8-methylquinolyl)azapentane were prepared by in situ transmetallation with Cu(ClO4)2 and characterized by physicochemical, spectroscopic and electrochemical methods.