DESIGNING, SYNTHESIS AND SPECTROSCOPIC STUDIES OF Co(II), Ni(II) AND Cu(II) TRANSITION METAL COMPLEXES WITH [N4] DONOR MACROCYCLIC SCHIFF’S BASE LIGAND DERIVED FROM 2,6-DIAMINO-4-CHOLROPYRIMIDINE
A. Rajput, S. Gautam, S. Chandra* and S.P. Sati
ABSTRACT
A novel tetradentate nitrogen donor [N4] macrocyclic Schiff’s base ligand which was synthesized by condensation reaction of diamine and diketone i.e. 2,6-diamino-4-cholropyrimidine and glutaric anhydride, respectively. Condensation reaction was carried out in 2:2 ratios in ethanolic medium and ligand was characterized by using analytical and spectral techniques (mass, 1H-NMR, IR). Co(II), Ni(II) and Cu(II) complexes of this synthesized ligand were also prepared and characterized by elemental analyzes, molar conductance measurements, magnetic susceptibility measurements, electronic and EPR spectral studies. On the basis of molar conductance complexes were non electrolytic in nature. On the basis of IR, electronic and EPR spectral studies an octahedral geometry has been approved to synthesized Co(II) and Ni(II) complexes but tetragonal geometry for Cu(II) complexes.
Keywords: Macrocyclic, Schiff’s base, complexes, spectral, octahedral, tetragonal.
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