(4-Chlorobenzoyl)(2-ethoxy-7-methoxynaphthalen-1-yl)methanone

In the title compound, C20H17ClO3, the naphthalene and benzene rings form an interplanar angle of 83.30 (8)°. The conformation around the central C=O group is such that the C=O bond vector forms a larger angle to the plane of the naphthalene ring than to the plane of the benzene ring, viz. 55.8 (2)° versus 15.8 (2)°. The 4-chlorophenyl groups form a centrosymmetric π–π interaction, with a centroid–centroid distance of 3.829 (1) Å and a lateral offset of 1.758 Å. An intermolecular C—H...O interaction is formed between the 4-chlorophenyl group and the O atom of a neighbouring methoxy group, and two very weak C—H...π contacts are present