Volume and compressibility changes of complex formation between 18-Crown-6 and NaCl,KCl, and CsCl in water |
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Authors: | Harald Høiland John A. Ringseth Einar Vikingstad |
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Affiliation: | (1) Department of Chemistry, University of Bergen, N-5014 Bergen-U, Norway |
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Abstract: | The apparent molal volumes and compressibilities of NaCl, KCl, and CsCl in mixtures of 18-Crown-6 and water have been calculated from density and speed-of-sound measurements at 25°C. The partial molal volumes and compressibilities of the salts when all cations have formed complexes with 18-Crown-6 molecules have been evaluated. The sign and magnitude of the volume and compressibility changes of complex formation strongly suggest that the charge of the cation becomes very effectively screened by the crown ether. |
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Keywords: | Partial molal volumes and compressibilities volume and compressibility changes of complex formation crown ether 18-Crown-6 aqueous |
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