Received 8 March 2008
The title compound, C18H16O4, is composed of a benzopyranone core with a 4-methoxyphenyl subsituent in the 3-position and an additional ethoxy group in the 7-position. The benzopyranone ring is not coplanar with the benzene ring, the dihedral angle between them being 41.76 (7)°. The methoxy and ethoxy substituents are nearly coplanar with the ring systems to which they are attached. Individual molecules are linked by two kinds of intermolecular hydrogen bonds into chains containing classical R22(8) rings. The chains are further assembled by aromatic F-tape and T-tape stacking interactions and additional intermolecular hydrogen bonding to give a two-dimensional network.
Data collection: SMART (Bruker, 1999); cell refinement: SAINT-Plus (Bruker, 1999); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IM2059 ).
The author is grateful for financial support from the Science and Technology Postgraduate Project of Weinan Teachers University, China (No. 08YKZ006)
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