r-2,c-6-Di­phenyl­piperidine

In the title compound, C₁₇H₁₉N, the piperidine ring adopts a chair conformation. The phenyl rings substituted at the 2- and 6-positions of the piperidine ring subtend dihedral angles of 81.04 (7) and 81.10 (7)° with the best plane of the piperidine ring. The crystal packing features C—H...π inter­actions.

2-Chloro-1-(3,3-dimethyl-2,6-di­phenyl­piperidin-1-yl)ethanone

In the title compound, C₂₁H₂₄ClNO, the piperidine ring adopts a chair conformation. The two phenyl rings are inclined to one another by 20.7 (1)°, and are inclined to the mean plane of the four planar atoms of the piperidine ring by 87.64 (10) and 70.8 (1)°. The mol­ecular structure features short intra­molecular C—H...Cl and C—H...O contacts. In the crystal, there are no significant inter­molecular inter­actions present.

3-Ethyl-cis-2,6-di­phenyl­piperidine

In the title compound, C₁₉H₂₃N, the piperidine ring adopts a chair conformation. The phenyl rings at the 2,6-positions of the piperidine ring occupy equatorial orientations. The crystal structure features C—H...π inter­actions.