title: 2-Hy-droxy-2,3,5,10,11,11a-hexa-hydro-1H-pyrrolo-[2,1-c][1,4]benzodiazepine-5,11-dione.
abstract: The seven-membered ring of the title compound, C(12)H(12)N(2)O(3), which is fused with the phenyl-ene ring, adopts a boat-shaped conformation (with the methine C atom as the prow and the phenyl-ene C atoms as the stern); the H atom on the methine linkage exists in an axial position. The five-membered ring that is fused with the seven-membered ring adopts an envelope conformation (with the C atom bearing the hy-droxy substituent representing the flap) [the deviation from the plane defined by the other four atoms is 0.200 (7) Å in one mol-ecule and 0.627 (5) Å in the other]. The two independent mol-ecules are disposed about a pseudo center of inversion and are connected by a pair of N-H⋯O hydrogen bonds. Adjacent dimers are linked by a pair of O-H⋯O hydrogen bonds, generating a chain running along the b axis.
authors.forename: Sarah
authors.initials: S
authors.lastname: Ourahou
authors.forename: Hafid
authors.initials: H
authors.lastname: Zouihri
authors.forename: Mohamed
authors.initials: M
authors.lastname: Massoui
authors.forename: El Mokhtar
authors.initials: el M
authors.lastname: Essassi
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677