Acid Dissociation Constants of Dialkyldithiocarbamic Acids and O,O′-Dialkyl S-Hydrogen Dithiophosphates and Formation Constants of Their Complexes with Cadmium(II), Zinc(II), and Lead(II) in 1:1 v/v Water-DMF Medium

The log values of β3, the formation constants of metal complexes with dialkyldithiocarbamates and O,O′-dialkyl dithiophosphates, were determined by polarography. The pKa values, the acid-dissociation constants of these ligands, were also determined kinetically. A linear relationship exists between these two variables for each metal and straight parallel lines were obtained.