Crystal structure of 2-[4(E)-2,6-bis(4-chlorophenyl)-3-ethylpiperidin-4-ylidene]acetamide

Abstract

In the title piperidine derivative, C21H22Cl2N2O, the piperidine ring adopts a chair conformation. The chlorophenyl rings are oriented at an angle of 45.59 (14)° with respect to each other. In the crystal, molecules are linked via N—H...O hydrogen bonds, forming C(4) chains along [100]. The chains are linked by C—H...O hydrogen bonds, forming sheets parallel to the ab plane. Within the sheets, there are N—H...π interactions present. The crystal studied was refined as an inversion twin.

Keywords

• crystal structure
• piperidine derivatives
• N—H...O hydrogen bonds
• N—H...π interactions