Received 14 October 2010
In the title compound, C20H20O5, the 2,3-dihydro-1H-indene ring system is essentially planar [maximum deviation = 0.010 (1) Å] and is inclined at an angle of 4.09 (4)° with respect to the phenyl ring. The C=C bond has an E configuration. In the crystal, the molecules are linked into chains propagating in  via intermolecular C-HO hydrogen bonds. The crystal structure is further consolidated by C-H interactions.
For general background to and the biological activity of chalcones, see: Nielsen et al. (1998); Go et al. (2005); Nowakowska (2007); Furusawa et al. (2005). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986). For bond-length data, see: Allen et al. (1987).
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5680 ).
The authors wish to express their thanks to Universiti Sains Malysia (USM) for providing research facilities. HKF and CKQ also thank USM for the Research University Grant (No. 1001/PFIZIK/811160). CKQ also thanks USM for the award of a USM fellowship.
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