Synthesis, Characterization And Solvent Extraction Studies Of 3,5-bis[(2-hydroxybenzylidene)-amino]-benzoic Acid And Its Co(ii) And Ni(ii) Complexes

ABSTRACT 3,5-Bis[(2-hydroxy-benzylidene)-amino]-benzoic acid (H2B) and its cobalt(II) and nickel(II) complexes were synthesized and characterized via: electronic, IR, 1 H NMR and 13C NMR. Job’s continuous variation method was used to determine the mole ratio for both metal complexes. Solvent extraction studies were carried out on H2B in 5% DMF with its cobalt(II) and nickel(II) complexes using CHCl3 as organic solvent; with variable condition effects of equilibrium time, buffer pH, mineral acids, salting-out agents and complexing agents. IR spectral study indicates coordination through (N2O2) …