The synthesis, spectral characterization, magnetic, susceptibility and molar conductance studies of new series of cobalt(II)complexes of propantheline bromide (PPB) with general stoichiometry Co(PPB)(2)(H2O)(2)X(2)] are reported, where X = Cl-, Br-, ClO4- and CH3COO-. In all the complexes PPB behaves as a unidentate ligand. Thermal studies (TG/DTA) have been used to evaluate kinetic parameters such as order of the thermal reaction (n) and activation energy (E(a)). These new complexes were found to be more potent as antimicrobial agents than the free ligand
