6,6′-Dihydroxy-2,2′-[(propane-1,3-diyldioxy)bis(nitrilomethylidyne)]diphenol

Abstract

The molecule of the title compound, C17H18N2O6, adopts a V-shaped conformation, the dihedral angle between the two halves of the molecule being 81.31 (4) °. There is one half-molecule in the asymmetric unit, with a crystallographic twofold rotation axis passing through the central C atom. There are strong intramolecular O—H...N and O—H...O hydrogen bonds involving the hydroxy group and adjacent O and N atoms. In the crystal structure, intermolecular O—H...O hydrogen bonds link the molecules, forming an infinite three-dimensional supramolecular structure.