5,5′-Dimethoxy-2,2′-[(pentane-1,5-diyldioxy)bis(nitrilomethylidyne)]diphenol

The molecule of the title compound, C21H26N2O6, which lies across a crystallographic inversion centre, crystallizes with two unique half-molecules in the symmetric unit and adopts a linear configuration and the imino group is coplanar with the aromatic ring, making a dihedral angle of 3.26 (3)°. Strong intramolecular O—H...N and weak intermolecular O—H...O and C—H...O hydrogen bonds and weak intermolecular π–π stacking interactions [centroid–centroid distance = 4.419 (2) ]establish an infinite three-dimensional supramolecular structure.