Abstract
The dissolution enthalpies of glycine in aqueous solutions of acetamide, N-methylacetamide, N,N-dimethylacetamide, N-ethylformamide, N,N-diethylformamide and N,N-diethylacetamide were measured at 298.15 K. The enthalpic pair interaction coefficients of glycine zwitterion-amide molecules were determined by using standard solution enthalpies of glycine in water and aqueous solutions of amides. The additivity of groups concept of Savage and Wood was used to estimate the contribution of each of the functional groups of the studied amides.
Zusammenfassung
Messungen zur Bestimmung der Lösungsenthalpie von Glycin bei 298.15 K in wäßrigen Lösungen von Acetamid (A), N-Methylacetamid (NMA), N,N-Dimethylacetamid (DMA), N-Ethylformamid (NEF), N,N-Diethylformamid (DEF) und N,N-Diethylacetamid (DEA) wurden durchgeführt. Unter Anwendung der Standard-Lösungsenthalpien von Glycin in Wasser und wäßrigen Lösungen von Amiden wurden die Enthalpie-Paarwechselwirkungskoeffizienten von Glycinzwitterion-Amidmolekülen bestimmt. Unter Anwendung des Gruppenadditionskonzeptes von Savage und Wood (SWAG) wurde der Beitrag jeder funktionellen Gruppe der untersuchten Amide abgeschätzt.
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Pałecz, B. Enthalpies of interaction of glycine with some amides in aqueous solutions at 298.15 K. Journal of Thermal Analysis 45, 805–809 (1995). https://doi.org/10.1007/BF02548898
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DOI: https://doi.org/10.1007/BF02548898