title: (RS)-3-Acetyl-2-methyl-4-(3-nitro-phen-yl)-1,4,5,6,7,8-hexa-hydro-quinolin-5-one.
abstract: In the title compound, C(18)H(18)N(2)O(4), the nitro group, a methyl group, the acetyl group and some atoms of the dihydro-quinolinone group are disordered over two sites with the ratio of occupancies fixed at 0.57:0.43. The relationship between the major and minor components of disorder is that of diastereomers. In the crystal structure, inter-molecular N-H⋯O, weak C-H⋯O and C-H⋯π inter-actions link the mol-ecules into two-dimensional layers running parallel to the (010) plane.
authors.affiliation: Department of Chemistry, Kashgar Teachers' College, Kashgar 844000, People's Republic of China.
authors.forename: Dong'e
authors.initials: D
authors.lastname: Wang
authors.forename: Yu-Zhou
authors.initials: YZ
authors.lastname: Wang
authors.forename: Muhtar
authors.initials: M
authors.lastname: Turhong