The heterobinuclear complexes [FeWO2(L)4(H2O)] (L=dithiocarbamates) were prepared by the interaction of Iron tungstate with the respective ligands in aqueous DMF. The magnetic moment (6.71 and 6.66 BM) and EPR studies suggested the presence of tungsten in the pentavalent state. The FT-IR spectral bands suggested the presence of (W=O) (900cm-1) and (Fe-O-W) (790cm-1) and bidentate dithiocarbamate ligands (1500 and 960 cm-1) in the molecule. The FT-IR and thermal decomposition studies confirmed the presence of a coordinated water molecule. The 1H NMR chemical shifts indicated non-identical environment of protons coming closer due to rigidity in rotation around C–N bond of dithiocarbamate ligand and coordination to the heterometal atoms. The proposed structure consists of a tetrahedral Iron (III) and octahedral tungsten (V) bridged by an oxo group. The antimicrobial activities of the complexes were determined by disc diffusion and well diffusion method.
