Medium effect on the dimethyltin(IV) complexes of 2-(N-morpholino) ethanesulfonic and 3-(N-morpholino) propanesulfonic acid

Add time:08/07/2019    Source:sciencedirect.com

Medium effect and equilibrium studies in aqueous solution are reported for dimethyltin(IV) complexes such as 2-(N-morpholino) ethanesulfonic (Mes) and 3-(N-morpholino) propanesulfonic (Mops) acid. Stoichiometries and stability constants of the complexes formed were determined at different temperatures and ionic strength 0.1 M NaNO3. The results showed that the best fit of the titration curves was obtained when complexes ML, MLH-1, MLH-2 and MLH-3 were expected beside the hydrolysis product of the dimethyltin(IV). The thermodynamic parameters calculated from the temperature dependence of the formation constant of the DMT(IV)–Mes and –Mops complexes were investigated. The effect of dioxane as a solvent on the formation constants of DMT(IV)–Mes and DMT(VI)–Mops complexes was discussed.

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