Acta Cryst. (2012). E68, o238  [ doi:10.1107/S1600536811054456 ]

3-Hydroxy-4-phenyl-1-(prop-2-en-1-yl)-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-2-one

M. Rida, K. Mamari, E. M. Essassi and S. W. Ng

Abstract: The asymmetric unit of the title compound, C₁₈H₁₈N₂O₂, contains three independent molecules. In each, the seven-membered diazepine ring adopts a boat conformation with the hydroxy-substituted C atom at the prow and fused-ring C atoms at the stern. In the crystal, the molecules are linked by O-HO and N-HO hydrogen bonds. The allyl group of one molecule is equally disordered over two positions.

Online 23 December 2011

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