2,2′-[1,1′-(Propane-1,3-diyldioxydinitrilo)diethylidyne]di-1-naphthol

The molecule of the title compound, C27H26N2O4, lies across a crystallographic inversion centre and adopts an l-shaped configuration. Within the molecule, the two naphthalene units are approximately perpendicular, making a dihedral angle of 80.24 (5)°. The two intramolecular O—H⋯N hydrogen bonds, generate S(6) ring motifs. In the crystal structure, every molecule links five other molecules into an infinite cross-linked layered supramolecular structure via intermolecular C—H⋯O hydrogen bonds, C—H⋯π interactions and π–π stacking interactions [centroid–centroid distance = 3.956 (4) Å].