Synthesis and physico-chemical characterization of a new Mannich base, N( morpholinobenzyl)benzamide and its Cu(II), Co(II), Ni(II) and Zn(II) complexes

2357-2360A new Mannich base, N-(morpholinobenzyl)benzamide (MBB), formed by the condensation of morpholine, benzamide and benzaldehyde and its Cu(II), Co(II), Ni(II) and Zn(II) complexes have been synthesized. Their probable structures have been determined on the basis of their microanalytical, IR, UV-vis. 1H NMR, 13C NMR and FAB-mass spectral data. All the complexes exhibit square planar geometry. The monomeric and nonelectrolytic nature of the complexes are evidenced by their magnetic susceptibility and low conductance data. The electrochemical behaviour of the complexes in acetonitrile solution has been studied by cyclic voltammetric method. The biological activities of the ligand and its metal chelates against the bacteria E.coli, Staphylococcus aureus, Klebsiella pneumoniae, Salmonella typhi, Pseudomonas aeruginosa and Shigella flexuri are also reported. The complexes have higher activity than that of the free Mannich base and the control