Hobart, David B. Jr.Merola, Joseph S.2016-09-222016-09-222012-08-01Acta Cryst. (2012). E68, o2490 [ doi:10.1107/S1600536812031741 ]http://hdl.handle.net/10919/73020The crystal structure of the title compound, C(5)H(8)FNO(2), at 100 K, displays inter-molecular N-H⋯O hydrogen bonding between the ammonium and carboxyl-ate groups as a result of its zwitterionic nature in the solid state. The five-membered ring adopts an envelope conformation with the C atom at the 3-position as the flap. The compound is of inter-est with respect to the synthesis and structural properties of synthetic collagens. The absolute structure was determined by comparison with the commercially available material.application/pdfenCreative Commons Attribution 4.0 Internationalamino acidpralinesx-raycrystal structure(2S,4R)-4-Fluoro-pyrrolidinium-2-carboxyl-ateArticle - RefereedActa Crystallographica Section E: Structure Reports Onlinehttps://doi.org/10.1107/S160053681203174168Pt 81600-5368