A. Sijpkes, G. Somsen
Aug 1, 1990
Citations
0
Influential Citations
2
Citations
Journal
The Journal of Chemical Thermodynamics
Abstract
Abstract Enthalpies of dilution of N-isopropylformamide, N-isobutylformamide, N-sec-butylformamide, N,N-diisopropylformamide, N-isopropylacetamide, N-isobutylacetamide, N-sec-butylacetamide, N,N-diisopropylacetamide, and isobutyramide, as well as the N-acetyl-N′-methyl amides of ( d,l )-2-aminobutyric acid, ( d,l )-norvaline, and ( d,l )-norleucine, dissolved in N,N-dimethylformamide have been measured calorimetrically at 298.15 K. The results have been used to calculate enthalpic pair-interaction coefficients B2h which are a measure of the enthalpy of interaction between two solute molecules. The B2h coefficients of amides and peptides with branched alkyl groups will be compared with those with non-branched alkyl groups and will be discussed in terms of solute-solute-solvent interactions.