Partial molar isentropic pressure coefficients of some N-acetyl amino acid and peptide amides at infinite dilution in aqueous solutions at the temperature 298.15 K

The partial molar isentropic pressure coefficients at infinite dilution k ∞ S,2 = −(∂ V∞/∂ p) S , where V ∞ 2is the partial molar volume at infinite dilution, have been determined for six N-acetyl amino acid and peptide amides in aqueous solution at the temperature 298.15 K. The results obtained hav...

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Veröffentlicht in:The Journal of chemical thermodynamics 1995-01, Vol.27 (7), p.745-750
Hauptverfasser: Hedwig, Gavin R., Høiland, Harald
Format: Artikel
Sprache:eng
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Zusammenfassung:The partial molar isentropic pressure coefficients at infinite dilution k ∞ S,2 = −(∂ V∞/∂ p) S , where V ∞ 2is the partial molar volume at infinite dilution, have been determined for six N-acetyl amino acid and peptide amides in aqueous solution at the temperature 298.15 K. The results obtained have been rationalized in terms of the likely solute — water interactions. The contribution of an alanyl side-chain to the value of k ∞ S,2 of a peptide has been derived. The result obtained is almost in agreement with that reported in previous work.
ISSN:0021-9614
1096-3626
DOI:10.1006/jcht.1995.0076