6,6′-Diethoxy-2,2′-[propane-1,3-diyldioxybis(nitrilomethylidyne)]diphenol

Abstract

The complete molecule of the title compound, C21H26N2O6, is generated by a crystallographic twofold axis and adopts a trans configuration with respect to the azomethine group. The two benzene rings are almost perpendicular to one another, making a dihedral angle of 89.53 (3)°. In the molecular structure, pairs of intramolecular O—H...N hydrogen bonds generate two six-membered rings. The crystal structure is further stabilized by intermolecular C—H...O hydrogen bonds, which link four adjacent molecules into a network structure.