Koenig, Jonas J., Neudoerfl, Joerg-M., Hansen, Anne and Breugst, Martin ORCID: 0000-0003-0950-8858 (2018). Redetermination of the solvent-free crystal structure of L-proline. Acta Crystallogr. Sect. E.-Crystallogr. Commun., 74. S. 1067 - 1074. CHESTER: INT UNION CRYSTALLOGRAPHY. ISSN 2056-9890

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Abstract

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 center dot center dot center dot 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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Koenig, Jonas J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neudoerfl, Joerg-M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hansen, AnneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Breugst, MartinUNSPECIFIEDorcid.org/0000-0003-0950-8858UNSPECIFIED
URN: urn:nbn:de:hbz:38-177019
DOI: 10.1107/S2056989018009490
Journal or Publication Title: Acta Crystallogr. Sect. E.-Crystallogr. Commun.
Volume: 74
Page Range: S. 1067 - 1074
Date: 2018
Publisher: INT UNION CRYSTALLOGRAPHY
Place of Publication: CHESTER
ISSN: 2056-9890
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Organic Chemistry
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
MOLECULAR-STRUCTURE; MONOHYDRATEMultiple languages
CrystallographyMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/17701

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