Synthesis and characterization of copper(II), nickel(II) and zinc(II) complexes of macrobicyclic hexadentate schiff base ligand

Abstract

A macrobicyclic hexadenate schiff base ligand has been synthesised by the condensation of cyanauric chloride, hydrazine and terphthaldehyde and its Cu(lI), Ni(II) and Zn(II) metal complexes have been isolated. The ligand and their complexes have been characterised by elemental analysis, magnetic measurements, X-ray diffraction, reflectance and IR spectral studies. The X-ray diffraction studies show the number of molecules per unit cell n = 3 which is same for both macrobicyclic ligand and their complexes indicating that metal atom is inside the cage structure and coordinated by six nitrogen atoms which is supported by IR spectral data. The magnetic measurements show octahedral structure of the complexes.