organic papers Acta Cryst. (2006). E62, o2979–o2980 doi:10.1107/S1600536806023324 Chopra et al.  C 22 H 16 FNO 3 o2979 Acta Crystallographica Section E Structure Reports Online ISSN 1600-5368 3-(4-Fluoro-3-phenoxyphenyl)-5-(4-methoxyphenyl)- isoxazole Deepak Chopra, a * T. P. Mohan b and B. Vishalakshi b a Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, Karnataka, India, and b Department of Chemistry, Mangalore University, Bangalore 574 199, India Correspondence e-mail: deepak@sscu.iisc.ernet.in Key indicators Single-crystal X-ray study T = 290 K Mean (C–C) = 0.005 A ˚ R factor = 0.067 wR factor = 0.161 Data-to-parameter ratio = 11.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e. Received 12 June 2006 Accepted 19 June 2006 # 2006 International Union of Crystallography All rights reserved The crystal structure of the title compound, C 22 H 16 FNO 3 , is stablized by C—H intermolecular interactions. Comment Isoxazoles and their structure–activity relationships have been studied for anticonvulsant activity in mice and rats (Scott et al., 2006, 2006). Derivatives of isoxazoles have been also studied as potential agrochemicals (Mohan et al., 2006). We present here the crystal structure of the title compound, (I) (Fig. 1). The bond lengths and angles (Table 1) in (I) show normal values. The planar isoxazole makes dihedral angles of 25.0 (1) and 27.3 (1)  , respectively, with the 4-methoxyphenyl and 4- fluoro-3-phenoxyphenyl groups. In the crystal structure, intermolecular C—H inter- actions, involving the centroids of benzene rings C1–C6 (Cg1) and C16–C21 (Cg2) (Table 2), pack the molecules into stacks parallel to the b axis (Fig. 2). Experimental The title compound was supplied by Mohan (2006). Single crystals of the compound were grown by slow evaporation of a dichloro- methane–hexane (2:1 v/v) solution at 275–277 K. Figure 1 View of the title compound, showing the atomic numbering and 30% probability displacement ellipsoids.