Bimetallic complexes of cobalt (II) and nickel (II) acetophenone with tin chloride were synthesized and characterized by elemental analyses, conductivity measurement, magnetic and spectral data. The complexes are 1:2 adducts and non-electrolytes in solution. The ligands and their complexes were screened for antibacterial activities against Staphyloccus aureus and Escherichia coli. Cobalt (II) bimetallic complexes were found active against the tested microorganisms.