Acta Cryst. (2004). E60, o919-o921  [ doi:10.1107/S1600536804010037 ]

5-(4-Hydroxy-3-methoxyphenyl)-1-phenylpent-4-ene-1,3-dione

A. F. Arrieta and A. Mostad

Abstract: In the crystalline state, the title molecule, C₁₈H₁₆O₄, exists in the enolized form and displays a strong intramolecular hydrogen bond. The molecular structure, as well as theoretical calculations, support the hypothesis that the conjugation in the molecule is a determining factor for the position of the enol H atom. The packing of the molecules is dominated by interactions between 3-methoxy-4-hydroxyphenyl- and enol groups, thus forming planar molecular chains. These interactions include normal O-HO bonds, as well as weak C-HO interactions and van der Waals forces.

Online 30 April 2004

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