Mbabazi, JolocamWasswa, JohnNtale, Muhammad2022-10-262022-10-262010Mbabazi, J., Wasswa, J., & Ntale, M. (2010). Equilibrium and kinetic studies of the stannate (IV)-polyol reaction. Bulletin of the Chemical Society of Ethiopia, 24(3).1011-3924https://nru.uncst.go.ug/handle/123456789/5007The stability constants of 1:1 stannate(IV)-polyol complexes in aqueous media have been determined using a conductimetric technique. The constants are fairly large, and lie in the range 5.3-123.0 for the ten ligands investigated. These values were subsequently used in conjunction with kinetic data to postulate a mechanism involving the species Sn(OH)5 as intermediate in the formation of the chelates. The stannate(IV)- polyol reaction, though taking place at higher pH values, is acid-catalysed and follows first-order kinetics in the oxyanion, but at large ligand-oxyanion mole ratios the reaction exhibits zero-order rate dependence on the polyol. These features taken together are consistent with a unimolecular nucleophilic substitution on the oxyanion.enHexahydroxystannate(IV)PolyolStability constantsConductimetric methodMechanismArticle