تحضير وتشخيص طيفي لمعقدات ايونات الكوبلت (II)و النيكل(II)و النحاس (II) مع الليكاند الجديدة المشتقة من [(4-امينو)انتيبايرين]

Abstract

The research includes preparation of the new Schiff Base ligand( PhNBz-P)derived from condensation reaction of (4- Amino Antipyrine)with p-nitrobenzaldehyde .Three chelate complexes have also been prepared by reacting this ligand with the metal ions Co(II),Ni(II),Cu(II). The preparation has been conducted after fixing the optimum  conditions of concentration.U.V- visible spectra of the complex solutions of the above metal ions have been studied for a range of concentration which obey lampert-Beers rule .The structures of complexes are deduced according to mole ratio method .The ratios of metal: ligand obtained are (1:1) for all complexes.The stability of complexes in solution were also studied.(UV-Vis) absorption spectra of ethanolic solution of complexes showed bathchromic shift.The infrared spectra of  the chelating complexes have been studied We can conclude that the proposed geometrical structures of the complexes of Co(II), Ni(II)and Cu(II) ions are tetrahedral