Six coordinate Ni(II)complexes of ONN donor aroylhydrazone ligands:synthesis,spectral studies,and crystal structures

摘要

A new ligand N'-(pyridin-2-ylmethylene)nicotinohydrazide(HL2)and two Ni(II)complexes of stoichiometry NiL1·H2O[L1-benzoylpyridine nicot-inoylhydrazone]and NiL2·H2O have been synthesized and characterized by elemental analyses,IR and UV-Vis spectral studies.Structures of HL2 and Ni(II)compounds have been determined by single crystal X-ray diffraction studies which reveal a distorted octahedral geometry around the two Ni(II)centers.