The coordination characteristic of the investigated thiosemicarbazones towards hazard pollutants, Cd (II) and Hg (II), becomes the first goal. Their complexes have been studied by microanalysis, thermal, electrochemical and spectral (electronic, IR and MS) studies. The substitutent (salicylaldehyde, acetophenone, benzophenone, o-hydroxy-p- methoxybenzophenone or diacetylmonoxime) plays an important role in the complex ...