Samaneh Ansari
Javad Moafi

Schiff base compounds, play a key role in the coordination chemistry. These ligands can form stable complexes as chelating ligands [1]. Metal complexes derived from Schiff base ligands that have both hard atoms, such as oxygen and nitrogen, and soft atom as sulfur in their structure, show interesting chemical properties. These complexes have been used as models for biological systems. The synthesis and use of asymmetric Schiff base as catalysts for various types of reactions have been considered more than before [2]. The main purpose of this study is synthesis and identification of Ni(II), Cu(II), Mn(II), Cd(II), Zn(II) complexes containing a new derivative of the diaminomaleonitrile which reacts as a tetradentate ligand. In this project an asymmetric Schiff base ligand, 2-(((E)-(2-hydroxy naphthalen-1-yl) methylene) amino)-3- (((E)-thiophen-2-ylmethylene) amino) maleonitrile was synthesized. The ligand and its complexes were charactrized by different analytical methods, such as FT-IR and UV-VIS spectroscopy, CHN, TG-DTA and ICP analytical techniques and magnetic susceptibility measurement