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The title compound, C19H14F3NO2, crystallizes in the keto–amine tautomeric form, with a strong intra­molecular N—H...O hydrogen bond. The mol­ecule is almost planar; the dihedral angle between the naphthalene ring system and the benzene ring is 4.60 (7)°. In the crystal, mol­ecules are linked into chains along the c axis by C—H...O hydrogen bonds. The F atoms of the trifluoro­methyl group are disordered over two positions with refined site occupancies of 0.668 (9) and 0.332 (9).

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The title compound, C18H11BrF3NO2, crystallizes in the phenol–imine tautomeric form, with a strong intra­molecular O—H...N hydrogen bond. The dihedral angle between the naphthalene ring system and the benzene ring is 28.54 (10)°.
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