This work involves the chemical synthesis of new co mplexes derived from bis(5-(benzylthio)- 1,3,4-thiadiazol-2-yl)methane, and characterized by C.H.N.M. elemental analysis, FTIR spectroscopy, Electronic spectra (Uv–visible), in a ddition to molar conductance ( Ω m ) of complexes solution in DMF solvent , and evaluation the magnetic moments (Me ff ) via Gouy’s method The antibacterial activity for the ligand an d their metal complexes were studied against three selected micro-organisms Staphylococcus aureu s, Pseudomonas, and Klebsiella. The antibiotic Gentamycin has been chosen to compare wi th the ligand and complexes.