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In this research new tridentate Schiff base ligand (S)-4-(methylthio)-2-((1-(pyridin-2-yl)ethylidene)amino) butanoic acid (HL), have been prepared from condensation of (2-acetylpyridine) with methionine amino acid . A coordinated complexes of manganese (II), cobalt(II), nickel(II), copper(II) and zinc(II) have also been prepared. The prepared ligand and its complexes characterized depending upon (FTIR &Uv-Vis) spectroscopies, elemental microanalysis (C.H.N.S and M) ,( 1 H and 13 C) N.M.R spectroscopy, mass spectrum, flame atomic absorption, magnetic measurements and  molar conductance. The results of different studies proved that new Schiff base ligand acts as a tridentate ONN donor in all the prepared complexes, as well as the results provided that the geometry of all prepared complexes was octahedral with (1:2) (M:L) ration , except Zn(II) complex which obtained tetrahedral geometry with (1:1) (M:L) ratio.

Synthesis and Spectroscopic Study of Metal Complexes with New Schiff Base Derived from 2-acetylpyridine and Methionine Amino Acid