Thermodynamic Studies Of Binary Complexes of Organotin (IV) Cations With Nitrogen Donor Ligands

Thermodynamic studies of dimethyltin (IV) and dioctyltin (IV) cations with nitrogen donor ligands were performed potentiometrically for 1:1 systems in 10% ethanol medium at three ionic strengths (µ= 0.05, 0.10, 0.15M) and at three different temperatures 20°C, 30°C, 40°C. Thermodynamic formation constants of various complexes have been calculated. Stability constants of generalized species (SCOGS) computer program was employed for computation. The strength of interaction is discussed in terms of stability constants of various complexes and other thermodynamic parameters i.e. ?Gº ?Hº and ?Sº. The concentration distribution of the various complex species in solution has been evaluated as a function of pH.