Acta Cryst. (2010). E66, o2669-o2670  [ doi:10.1107/S1600536810038183 ]

(Z)-3-(Anthracen-9-yl)-1-(2-ethoxyphenyl)prop-2-en-1-one

J. Joothamongkhon, S. Chantrapromma, T. Kobkeatthawin and H.-K. Fun

Abstract: The molecule of the title chalcone, C₂₅H₂₀O₂, consisting of 2-ethoxyphenyl and anthracene rings bridged by a prop-2-en-1-one unit, is twisted and exists in the Z configuration with respect to the central C=C bond. The dihedral angle between the benzene and anthracene rings is 78.17 (9)°. The propene unit makes dihedral angles of 44.5 (2) and 81.1 (2)° with the benzene and anthracene rings, respectively. The ethoxy substituent is almost coplanar with the attached benzene ring [C-O-C-C torsion angle = 178.57 (19)°]. In the crystal, molecules are linked into chains along the a axis by weak C-HO interactions. The crystal structure is further stabilized by C-H interactions.

Online 30 September 2010

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