Journal of Physical Chemistry p. 6862 - 6864 (1994)
Update date:2022-08-04
Topics:
Lepori, Luciano
Koppenhoefer, Beenhard
Volume changes on mixing the enantiomers of N-trifluoroacetylamino acid methyl esters (N-TFA-amino acid-OMe) were determined at 25 deg C by means of a high-precision vibrating-tube densimeter.The excess molar volume (VE) for the racemic mixtures of N-TFA-Ala-OMe 1, N-TFA-Val-OMe 2, and N-TFA-Leu-OMe 3, were found as VE = 0.0098, -0.0458, and 0.035 cm3 mol-1, respectively.For 2 and 3, these volumetric effects of discriminating interactions between enantiomers in the liquid phase are the largest ever observed.
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