Halogen/azide bridged box dimer copper(II) complexes of 2-benzoylpyridine-3-methoxybenzhydrazone: Structural and spectral studies

Abstract

The new proligand 2-benzoylpyridine-3-methoxybenzhydrazone (HL) and its three copper(II) complexes have been synthesized and characterized by different physicochemical techniques, including molar conductivity measurements, magnetic studies, electronic, infrared and EPR spectral studies. The crystal structures of HL and its copper complexes have been resolved using single crystal X-ray studies. The reaction of 2-benzoylpyridine-3-methoxybenzhydrazone with a variety of copper salts yielded a series of copper(II) complexes of the type [CuLX]2 where X = Cl (1), Br (2) and N3 (3). The crystal structures of all these compounds revealed halogen/azide bridged box dimers having the monoclinic space group symmetry P21/n. All the complexes have a distorted square pyramidal geometry.