The thermochemical characteristics of complex formation reactions between 3<Emphasis Type="Italic">d</Emphasis> transition metal ions and L-serine in aqueous solution

The heat effects of complex formation between nickel(II), cobalt(II), cadmium (II), and zinc(II) ions and L-serine in aqueous solution over the ionic strength range 0.25–0.75 (background electrolyte KNO₃) were determined calorimetrically at 298.15 K. The heats of dilution of solutions of metal nitrates with solutions of the background electrolyte were measured under identical conditions for the introduction of the corresponding corrections. The thermodynamic characteristics of complex formation between 3d transition metals and L-serine were calculated. The results were analyzed using the Herny theory. The complex-forming ability of transition metals in reactions with the ligand was characterized with the use of the Irving-Williams series.