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In the title compound, C 27 H 19 F 2 N, the five-fused-ring system is highly puckered and the dihedral angle between the central pyridine ring and pendant difluorobenzene ring is 45.12 (12)°. In the crystal, inversion dimers linked by pairwise weak C—H...N hydrogen bonds generate  R 2 2 (12) loops and the dimers are further linked by weak C—H...F interactions to form [\overline{1}01] chains.

6-(3,4-Difluorophenyl)-7,8,13,14-tetrahydrodibenzo[c,k]phenanthridine