Acta Cryst. (2011). E67, o1713  [ doi:10.1107/S160053681102294X ]

7-Diethylamino-2-oxo-2H-chromene-3-carbaldehyde

H.-D. Li and B.-Z. Yin

Abstract: In the title compound, C₁₄H₁₅NO₃, all non-H atoms except for those of the methyl and the disordered ethyl groupare approximately co-planar, the largest deviation from the mean plane being 0.0223 (13) Å at the N atom. In the crystal, the packing of molecules through weak intermolecular C-HO hydrogen-bonding interactions leads to the formation of layers parallel to bc plane. Within these layers, there exist slipped - stacking interactions between symmetry-related fused rings [centroid-centroid distances = 3.527 (3) and 3.554 (3), slippage = 0.988 and 1.011 Å, respectively]. One ethyl group is disordered over two sets of sites with site-occupation factors of 0.54 and 0.46.

Online 18 June 2011

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