Potentiometric and calorimetric study on stability of nicotinamide complexes of silver(I) and copper(II) in aqueous ethanol and dimethylsulfoxide

The complex formation between silver(I) and nicotinamide as well as between copper(II) and nicotinamide in water–ethanol and water–dimethylsulfoxide media was studied by means of potentiometric technique. The heat of complex formation was measured using the method of precision calorimetry. The experimental data have been considered from the point of view of thermodynamic characteristics of the reagents and their solvation.