Kuang YY1, Huo M, Chen FE. Acta Crystallogr C. 2004 Jul;60(Pt 7):o505-6. Epub 2004 Jun 22.
In the title compound, C10H14BrNO3, the six-membered lactone ring is in a boat conformation, with the two carbonyl groups cis to one another across the boat basal plane. C-H...O hydrogen bonds and weak C-H...Br interactions stabilize the crystal structure.
Kafka S1, Pevec A, Proisl K, Kimmel R, Košmrlj J. Acta Crystallogr Sect E Struct Rep Online. 2012 Nov 1;68(Pt 11):o3199-200. doi: 10.1107/S1600536812043280. Epub 2012 Oct 24.
In the title hydrate, C(12)H(13)NO(4)·H(2)O, the piperidine ring that is fused to the benzene ring is in a sofa conformation with the chiral C atom lying 0.4084 (18) Å out of the plane of the nine fused-ring atoms. In the crystal, O-H⋯O and N-H⋯O hydrogen bonds link the organic mol-ecules and water mol-ecules into chains running along the b-axis direction. The chains are further connected into layers parallel to the bc plane by π-π inter-actions between inversion-related benzene rings [centroid-centroid distance = 3.8846 (9) Å].