| Summary: | In the title compound, C17H15F3N4O2, the dihedral angle between the trifluoromethoxy-substituted benzene ring and the pyrimidinone ring is 45.1 (5)°, while that between the fused benzene ring and the pyrimidinone ring is 0.67 (1)°. Part of one of the benzene rings and its trifluoromethoxy substituent are disordered over two positions of approximately equal occupancy (0.51:0.49). Intermolecular N—H...O and N—H...N hydrogen bonds contribute to the stability of the crystal structure. A weak intramolecular C—H...F contact is also found. In addition, π–π stacking interactions, with centroid–centroid distances in the range 3.673 (6)–3.780 (8) Å, and weak C—H...π interactions are also observed.
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