The solution chemistry of organotin compounds. IV. Thermodynamic parameters of the complex formation between MeSnCl3 and alkyl sulfoxides determined from titration calorimetry.

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概要

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• Calorimetric titration data have been analyzed to determine thermodynamic parameters of the interacting system. The system studied is MeSnCl<SUB>3</SUB> plus dialkyl sulfoxide in CH<SUB>2</SUB>Cl<SUB>2</SUB> and a nonlinear least squares method is utilized to simulate the titration curve. The 1:1 and 1(acid):2(base) complexes are found to coexist in solution, and the effect of alkyl chain length on the complex formation is examined. The complex formation proceeds most favorably under the total carbon number of four, and inductive and steric effects are considered to operate in a compensating way. Entropy changes on the reactions are discussed with the aid of molecular theory of thermodynamic functions, and a new method is suggested that affords the number of solvent molecules released on the complex formation.

• 公益社団法人 日本化学会の論文

著者

• Shimizu Naoto

  Faculty of Pharmaceutical Sciences, Osaka University

関連論文

• The solution chemistry of organotin compounds. IV. Thermodynamic parameters of the complex formation between MeSnCl3 and alkyl sulfoxides determined from titration calorimetry.
• NMR study of molecules in anisotropic systems. II. 1a,2a,3e,4e,5e,6e- and 1e,2e,3e,4e,5e,6e-hexachlorocyclohexanes dissolved in nematic liquid crystals.

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