Enthalpies of solution of tri-n-alkyl phosphates in mixtures of water and N,N-dimethylformamide: The effect of cosolvent on the hydrophobic interaction |
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| Authors: | S Lindenbaum D Stevenson J H Rytting |
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| Institution: | 1. Pharmaceutical Chemistry Department, McCollum Laboratories, The University of Kansas, 66045, Lawrence, Kansas
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| Abstract: | Enthalpies of solution of trimethylphosphate (TMP), triethylphosphate (TEP), tri-n-propylphosphate (TPP), and tri-n-butylphosphate (TBP) in mixtures of N,N-dimethylformamide (DMF) and water have been measured at 25°C. The results are interpreted in terms of the previously proposed statistical cooperative hydration model. The calculations suggest that in each case for TMP, TEP, and TPP the hydration cage is comprised of approximately 30 water molecules. |
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