Neodymium (III) and Samarium (III) Complexes of 2, 2′-((1E, 1′E)-(1, 2- Phenylene bis(Azanlylidene)bis(Methanylylidene)) diphenol ligand: Synthesis, Characterization and Biological activity

Complexes of Nd(III) and Sm(III) of a Schiff base ligand derived from the condensation of o-phenylenediamie and 2-hydroxybenzaldehyde were synthesised and characterised by various analytical and spectroscopic techniques. The analytical values revealed a metal to ligand ratio of 1:2 for the Nd(III) complex and a 1:1(ligand: metal) for Sm(III) complex. The complexes were characterised by elemental analysis, molar conductance, UV-Visible and infrared spectral studies. Plausible structures were proposed for Nd(BSOPD)(2) and SmBSOPD based on the results obtained. In-vitro antimicrobial activities of both the Schiff base and the synthesised metal complexes were evaluated against six (6) human pathogens. The complexes showed significant activity compared to the free ligand. These complexes may be employed as active ingredients in the development of antibacterial and antifungal agents.