Interaction of Organotin (IV) Moieties with O-O Donor Ligands

Abstract

Equilibrium studies of dimethyltin (DMT) (IV) and dioctyltin (DOT) (IV) cation with oxygen donor ligands were carried out 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. The participation of different ligand functional group in binding to organotin is discussed. Thermodynamic formation constants of protonated, non protonated and hydroxo complexes have been calculated. Stability constants of generalized species (SCOGS) computer program was applied for computation. The concentration distribution of the various complex species in solution has been evaluated as a function of pH and is presented in the form of speciation curves.