Formation and stability constants of dimethyltin(IV) complexes with citrate, tripolyphosphate, and nitrilotriacetate in aqueous solution

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Abstract
The complex formation of [SnMe2]2+ with citrate, tripolyphosphate, and nitrilotriacetate has been investigated potentiometrically at 25 °C and I= 0.1 mol dm–3(KNO3); the protonation constants for all three ligands have also been determined under the same experimental conditions. The species formed, together with their stability constants, have been determined by analysing a large number of data points. The results are compared critically to literature data obtained under analogous experimental conditions. The possible implications of the interaction of dimethyltin(IV) with the same ligands are also outlined.