title: r-2,c-6-Bis(4-chloro-phen-yl)-t-3-isopropyl-1-nitro-sopiperidin-4-one.
abstract: In the title mol-ecule, C(20)H(20)Cl(2)N(2)O(2), the piperidine ring adopts a chair conformation and the nitroso group at position 1 has a bis-ectional orientation. The two benzene rings and the isopropyl group attached to the piperidine ring in positions 2, 6 and 3, respectively, have axial orientations. The dihedral angle between the two benzene rings is 21.56 (13)°. One of the Cl atoms is disordered over two positions in a 0.281 (5):0.719 (5) ratio. In the crystal structure, mol-ecules are linked by C-H⋯O hydrogen bonds and a short C-H⋯O contact occurs within the mol-ecule.
authors.forename: P
authors.initials: P
authors.lastname: Gayathri
authors.forename: A
authors.initials: A
authors.lastname: Thiruvalluvar
authors.forename: A
authors.initials: A
authors.lastname: Manimekalai
authors.forename: S
authors.initials: S
authors.lastname: Sivakumar
authors.forename: R J
authors.initials: RJ
authors.lastname: Butcher