Synthesis and Characterization of Ni (II) Complex with Tridentate Ligand of Schiff’s Bases of Salicylaldehyde with Thiocyanate Ligand

A group of combinations which have more importance in biological studies, biochemistry and also catalytic applications are Schiff base complexes. They have been considered by the chemists. IN this work, we reported the synthesis and characterization of tridentate Schiff base ligand from the reaction of isonicotinohydrazide with salicylaldehyde. Metal complex of the Schiff base was prepared from salt of Ni(II) on 1:1(ligand: metal).Thiocyanate ligand was used in addition to coordinate to transition metal ion, which presents a novel in transition metal complex .The obtained ligand and complex were investigated using techniques such as IR,1HNMR,13CNMR,UV/Vis,CV, measurement of electrical conduction, and melt point. The comparison of spectroscopic results for the ligand and complex an also visible absorption spectra for complex suggest that ligand act as tridentate .In UV/Vis spectrum ,the observed transfers in ligand include the transfer between n-?* and ?- ?* orbitals, and in the transfer is related to d-d in complex.