THERMODYNAMIC FUNCTIONS OF MOLECULAR INCLUSION OF SOME ISOMERS OF BUTANEDIOL IN GAS PHASE INTO α AND β CYCLODEXTRIN CAVITIES IN AQUEOUS SOLUTIONS AT 298.15 K

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Abstract

The enthalpies, entropies and Gibbs energies of inclusion of dl-1,3-, 1,4- and meso-2,3-butanediols into α- and β-cyclodextrin cavities from ideal gas phase have been determined on the basis of newly obtained experimental data of the butanediols. The butanediol molecules are stabilised strongly in the cavities due to interactions with inner walls of the cavities. Entropies of the gaseous isomers are greatly decreased in the cavities. The largest decrease is obtained for the case of 2,3-BD. Discussions concerning the 1,4-butanediol given in the preceding paper have been changed due to the adoption of new data on the butanediols.

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