5,6,8-Trichloro-4-phenyl-3,4-dihydroquinolin-2(1H)-one

In the quinolone ring system of the title compound, C₁₅H₁₀Cl₃NO, the pyridone moiety assumes a slightly twisted boat conformation. The plane of the benzene ring is twisted at an angle of 11.9 (1)° to the pyridone ring, indicating the slight non-planarity of the system. The molecules are stabilized by N—H...O-type hydrogen bonds in addition to van der Waals interactions.

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