Date Published: July 01, 2011
Publisher: International Union of Crystallography
Author(s): Yun-Zhou Jin, Rong-Hua Zhang, Da-Xu Fu, Yao-Kang Lv.
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.
For general background to asymmetric photochemical reactions, see: Gratzel (2001 ▶); Korzeniewski & Zoladz (2001 ▶); Aubert et al. (2000 ▶). For photo-induced cyclizations, see Griesbeck et al. (2002 ▶); Henz et al. (1995 ▶). For related structures, see: Griesbeck et al. (1997 ▶, 1999 ▶); Basarić et al. (2008 ▶).