(2S,4R)-4-Fluoro-pyrrolidinium-2-carboxyl-ate.
The 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.
Department of Chemistry, Virginia Tech, Blacksburg, VA 24061,  USA.
David B
DB
Hobart
Joseph S
JS
Merola