Publication Date:
2018-07-10
Description:
The title compound, (S)-pyrrolidine-2-carboxylic acid (C5H9NO2), commonly known as L-proline, crystallized without the inclusion of any solvent or water molecules through the slow diffusion of diethyl ether into a saturated solution of L-proline in ethanol. L-Proline crystallized in its zwitterionic form and the molecules are linked via N—H...O hydrogen bonds, resulting in a two-dimensional network. In comparison to the only other publication of a single-crystal structure of L-proline without inclusions [Kayushina & Vainshtein (1965). Kristallografiya, 10, 833–844], the R 1 value is significantly improved (0.039 versus 0.169) and thus, our data provides higher precision structural information.
Electronic ISSN:
2056-9890
Topics:
Chemistry and Pharmacology
,
Geosciences
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