Acta Cryst. (2013). E69, o1130 [ doi:10.1107/S1600536813015833 ]
Abstract: In the title compound, C26H22N2O5, the system consisting of five fused rings, being essentially planar with an r.m.s. deviation from the least-squares plane of 0.049 (3) Å, makes a dihedral angle of 58.72 (12)° with the plane of the ethyl carboxylate group immediately attached to it, and a dihedral angle of 89.48 (14)° with the plane of the ethyl carboxylate group attached via the -CH2- bridge. Bond lengths indicate -delocalization over the whole pentacyclic system. The molecular conformation is stabilized by a weak intramolecular C-HO hydrogen bond. In the crystal, molecules form stacks along the b-axis direction, neighboring molecules within each stack being related by inversion and the shortest distance between the centroids of the pyridine rings within the stack being 3.667 (2) Å.
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