2,4-Bis(4-fluoro­phen­yl)-2,3-di­hydro-1H-1,5-benzodiazepine

In the title compound, C21H16F2N2, the seven-membered 1,4-diazepine ring of the benzodiazepine ring system adopts a distorted-boat conformation. The benzene ring of this system makes dihedral angles of 18.6 (2) and 78.8 (2)° with those of two fluoro­phenyl substituents. In the crystal, inversion dimers linked by two weak C—H⋯F hydrogen bonds generate R22(20) ring motifs. There are also weak N—H⋯π and C—H⋯π inter­actions