title: Crystal structure of 2-(4-fluoro-3-methyl-phen-yl)-5-{[(naphthalen-1-yl)-oxy]meth-yl}-1,3,4-oxa-diazole.
abstract: The title compound, C20H15FN2O2, adopts an almost planar conformation. The oxa-diazole ring makes dihedral angles of 13.90 (1) and 7.93 (1)° with the naphthalene ring system and benzene ring, respectively, while the naphthalene ring system and benzene ring are inclined to one another by 6.35 (1)°. In the crystal, adjacent mol-ecules are linked via C-H⋯N hydrogen bonds, forming chains propagating along [100]. There are also π-π inter-actions present [inter-centroid distances = 3.5754 (9) and 3.7191 (12) Å], linking the chains to form ribbons lying parallel to (011).
authors.affiliation: Department of Chemistry, Anna University, Chennai 600 025, India ; Orchid Chemicals & Pharmaceuticals Ltd, R&D Centre, Sholinganallur, Chennai 600 119, India.
authors.forename: Muniyappan
authors.initials: M
authors.lastname: Govindhan
authors.affiliation: Department of Chemistry, Anna University, Chennai 600 025, India.
authors.forename: Kathavarayan
authors.initials: K
authors.lastname: Subramanian
authors.affiliation: Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: Vijayan
authors.initials: V
authors.lastname: Viswanathan
authors.affiliation: Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: Devadasan
authors.initials: D
authors.lastname: Velmurugan
keywords: crystal structure; hydrogen bonding; naphthalene; oxa­diazole; triazole; π–π inter­actions