Preparation and Characterization of Some Transition Metal Complexes with New Benzimidazole Derivatives

The present work comprises preparation of nine new benzimidazole ligands H3L1, H4L2, H3L3, H3L4, HL5, H2L6, H3L7, H2L8, H3L9. The resulting ligands were characterized by elemental analyses and spectral studies (IR, NMR, UV and mass spectroscopy). MoreoverThe cytotoxic activity for most of the newly synthesized compounds was examined in vitro against the human breast cancer cell line (MCF-7). The Schiff base ligands were found to be biologically active and their metal complexes enhanced their cytotoxic act