N,N′-Bis[4-(trifluoromethyl)phenyl]pyridine-2,6-dicarboxamide

Abstract

In the title molecule, C21H13F6N3O2, the pyridine ring forms dihedral angles of 1.7 (1) and 5.2 (1)° with the two benzene rings. In the crystal structure, intermolecular N—H...O hydrogen bonds and π...π interactions [centroid–centroid distance of 3.628 (3) Å between aromatic rings] link molecules into stacks along the c axis. The two trifluoromethyl groups are each rotationally disordered between two orientations, with occupancy ratios of 0.58 (1):0.42 (1) and 0.55 (1):0.45 (1).