A new polydentate hydrazonic ligand and its dinuclear copper(II) complex with different co-ordination environments

Abstract

A new hydrazone derivative, di-2-pyridyl ketone [phenyl(semicarbazono)acetyl]hydrazone (H₂L), has been prepared and examined as a chelating agent towards metal ions. The molecular structure of the copper complex [Cu₂LCl₂]·H₂O consists of a pair of structurally distinct metal centres with different environments bound to the heptadentate hydrazonic ligand and held together by a –N–N– bridge.