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The title imidoyl chloride, C16H8Cl4N2, has formed accidentally as a side product during the synthesis of a quinolin-3-one derivative. The molecule is not flat [the dihedral angle between the 4,6-dichloroquinoline and the imidoyl chloride planes is 53.43 (5)°], preventing π-conjugation over the complete entity. In the crystal, C—H...N hydrogen bonding between a chlorophenyl C—H group and the quinoline N atom, as well as π–π stacking between neighbouring quinoline rings, consolidate the packing.doi:10.1107/s2414314617002747 fatcat:ryuahje74ne3lex66nsk523b54