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Acta Cryst. (2011). E67, o98-o99  [ doi:10.1107/S160053681005049X ]

Ethyl 4-(1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinolin-2-yl)benzoate

Y. C. Chan, A. Salhin, M. Khairuddean, M. Hemamalini and H.-K. Fun

Abstract: The title compound, C21H15NO4, was synthesized by reducing the Schiff base obtained from acenaphthenequinone and ethyl-4-aminobenzoate. The dihedral angle between the essentially planar 1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinoline ring system [maximum deviation = 0.061 (2) Å] and the benzene ring is 75.08 (10)°. In the crystal, molecules are connected via weak intermolecular C-H...O hydrogen bonds, forming a two-dimensional network. The ethyl group is disordered over two sets of sites with a refined occupancy ratio of 0.502 (12):0.498 (12).

Online 11 December 2010

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