Acta Cryst. (2008). E64, o1973  [ doi:10.1107/S1600536808029723 ]

r-2,c-6-Bis(4-chlorophenyl)-t-3-isopropyl-1-nitrosopiperidin-4-one

P. Gayathri, A. Thiruvalluvar, A. Manimekalai, S. Sivakumar and R. J. Butcher

Abstract: In the title molecule, C₂₀H₂₀Cl₂N₂O₂, the piperidine ring adopts a chair conformation and the nitroso group at position 1 has a bisectional 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, molecules are linked by C-HO hydrogen bonds and a short C-HO contact occurs within the molecule.

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