Acta Crystallographica Section E

Volume 68, Part 2 (February 2012)

organic compounds

is5037 scheme

Acta Cryst. (2012). E68, o317-o318 [ doi:10.1107/S1600536812000037 ]

(E)-1-(Furan-2-yl)-3-(2,4,5-trimethoxyphenyl)prop-2-en-1-one

T. Suwunwong, S. Chantrapromma, C. Karalai, P. Wisitsak and H.-K. Fun

Abstract: In the title chalcone derivative, C₁₆H₁₆O₅, the dihedral angle between the furan and benzene rings is 2.06 (17)°. The two methoxy groups at the ortho and para positions are essentially coplanar with the benzene ring [C-O-C-C angles = -1.0 (5) and 178.5 (3)°], whereas the third one at the meta position is slightly twisted [C-O-C-C = 9.6 (5)°]. In the crystal, weak C-HO interactions link the molecules into a sheet parallel to ( $\overline{1}$ 02). An intermolecular [pi] - [pi] interaction between the furan and benzene rings is present [centroid-centroid distance = 3.772 (2) Å]. A short CC contact [3.173 (5) Å] is also observed between neighbouring furan rings.


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