Co-ordination properties of dialkyltin(IV) in aqueous solution. Thermodynamics of complex formation with carboxylic acids

Abstract

The complex formation of [SnMe₂]²⁺ ion with acetate, malonate, and succinate ligands has been investigated by means of potentiometric measurements at 25 °C and I= 0.1 mol dm^–3(KNO₃). Values of ΔH^⊖ and ΔS^⊖ have been obtained by means of calorimetric titrations. On the basis of these values, bonding details have been inferred for the major species. The thermodynamic data are also discussed in view of the cis-trans disposition of the alkyl groups.