Interactions of the trimethyltin(IV) cation with carboxylic acids, amino acids, and related ligands

Abstract

The interactions of the trimethyltin(IV) cation, [Sn(CH₃)₃(H₂O)₂]⁺, with water, acetic, oxalic, malonic, succinic, tartaric, and citric acids, 4,4,4-trifluoro-1-(2-thienyl)butane-1,3-dione, pyridine, 2,2′-bipyridyl, pentane-2,4-dione, glycine, aspartic acid, histidine, 2-aminoethanethiol, cysteine, 2-mercaptoethanol, penicillamine, mercaptosuccinic acid, British Anti Lewisite (2,3-dimer-captopropan-1-ol), glutathione, orthophosphate, adenosine5′-monophosphate, inosine 5′-monophosphate, and pyrophosphate were investigated at 25 °C and ionic strength 0.3 mol dm^–3(NaClO₄) using the potentiometric technique. The proton formation constants of the ligands have been determined and the compositions and log β values of the complexes formed with the trimethyltin(IV) cation are also reported.