title: (1S,3R)-3-Ammonio-cyclo-hexa-necarboxyl-ate.
abstract: The title γ-amino-butyric acid, C(7)H(13)NO(2), exists as a zwitterion. The crystal structure is stabilized by a network of inter-molecular N-H⋯O hydrogen bonds, forming a two-dimensional bilayer. An inter-molecular C-H⋯O hydrogen bond is also observed.
authors.forename: Yu
authors.initials: Y
authors.lastname: Hu
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Sun
authors.forename: Ying
authors.initials: Y
authors.lastname: Guo
authors.forename: Xun
authors.initials: X
authors.lastname: Tuo