Synthesis, Characterization and Antibacterial Studies of Pr(III), Nd(III), Gd(III), Sm(III) and Dy(III) Complexes with N-(l-Morpholinobenzyl)semicarbazide

摘要

A series of chelate complexes of the lanthanide ions Pr(III), Nd(III), Gd(III), Sm(III) and Dy(III) with a Mannich base, N-(1-morpholinobenzyl)semicarbazide (MBS) have been synthesized and characterized. The structures of these complexes have been elucidated by the analytical, magnetic, electrical conductivity and spectral studies. The complexes exhibit the general formula [Ln(MBS)3] where Ln = Pr~(3+), Nd~(3+), Gd~(3+), Sm~(3+)and Dy~(3+) and MBS = morpholinobenzyl semicarbazide. The biological activities of the ligand and the complexes against E. coli, S. aureus, K. pneumoniae and P. aeruginosa were also studied. The metal chelates have higher activity than that of the free ligand, N-(1-morpholinobenzyl)semicarbazide.