title: (3aR*,5R*)-5-(4-Chloro-phen-yl)-1,2,3,3a-tetra-hydro-benzo[e]pyrrolo-[2,1-b][1,3]ox-azepin-10(5H)-one.
abstract: The title compound, C(18)H(16)ClNO(2), 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-chloro-phenyl group is attached and the C atom of the 4-chloro-phenyl group attached to the 1,3-oxazepine ring are chiral C atoms, but the crystal is a racemate in which the enanti-omers are linked by a pair of weak inter-molecular C-H⋯O hydrogen bond, forming an inversion dimer.
authors.affiliation: Chemistry Department, Tongji University, Shanghai 200092, People's Republic of China.
authors.forename: Yun-Zhou
authors.initials: YZ
authors.lastname: Jin
authors.forename: Rong-Hua
authors.initials: RH
authors.lastname: Zhang
authors.forename: Da-Xu
authors.initials: DX
authors.lastname: Fu
authors.forename: Yao-Kang
authors.initials: YK
authors.lastname: Lv