Acta Cryst. (2009). E65, o543  [ doi:10.1107/S1600536809004796 ]

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

R. Mitsui, K. Noguchi and N. Yonezawa

Abstract: 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 - interaction, with a centroid-centroid distance of 3.829 (1) Å and a lateral offset of 1.758 Å. An intermolecular C-HO interaction is formed between the 4-chlorophenyl group and the O atom of a neighbouring methoxy group, and two very weak C-H contacts are present.

Online 18 February 2009

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