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Acta Cryst. (2013). E69, o224
[ doi:10.1107/S1600536813000500 ]

Dimethyl 2-[(acridin-9-yl)methylidene]malonate

S. M. V. de Almeida, I. R. Pitta, M. do C. A. de Lima, F. J. B. Mendonça Junior and C. A. de Simone

Abstract: In the title compound, C19H15NO4, the acridine system is essentially planar (r.m.s. deviation = 0.015 Å). The crystal packing exhibits [pi]-[pi] interactions between pairs of centrosymmetric molecules, one of them between the central heterocyclic rings and others between the outer benzene rings of the acridine systems, with centroid-centroid distances of 3.692 (1) and 3.754 (1) Å, respectively. These pairs are further linked by additional [pi]-[pi] interactions along the a-axis direction through one of the two outer benzene ring of neighboring molecules, with a centroid-centroid distance of 3.642 (2) Å.

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