(3aR*,5R*)-5-(4-Chlorophenyl)-1,2,3,3a-tetrahydrobenzo[e]pyrrolo[2,1-b][1,3]oxazepin-10(5H)-one

Abstract

The title compound, C18H16ClNO2, is the main product of a photoreaction. The two benzene rings make a dihedral angle of 86.40 (2)° with each other. The 1,3-oxazepine C atom to which the 4-chlorophenyl group is attached and the C atom of the 4-chlorophenyl group attached to the 1,3-oxazepine ring are chiral C atoms, but the crystal is a racemate in which the enantiomers are linked by a pair of weak intermolecular C—H...O hydrogen bond, forming an inversion dimer.