POTENTIOMETRIC STUDIES OF THE COMPLEX-FORMATION BETWEEN TRIMETHYLTIN(IV) AND SOME SELECTED AMINO-ACIDS

The aqueous solution chemistry of the trimethyltin(IV) species and their complexes with amino acids has been studied by potentiometric technique. The results showed the formation of 1:1 complexes, and the corresponding stability constants were determined. The amino acid was bound to (CH3)3Sn(IV) as a monodentate ligand. The effect of the pK(a) value of the respective ligand on the stability constant of its complex species with the organotin(IV) ion was elucidated. The concentration distribution of the complexes in solution was evaluated.