4,4′-Dimethoxy-2,2′-[(butane-1,4-diyldioxy)bis(nitrilomethylidyne)]diphenol

Abstract

The title Schiff base bisoxime compound, C20H24N2O6, lies across an inversion centre and adopts an E configuration with respect to the C=N bond. In the molecule, the oxime group is roughly coplanar with the benzene ring, forming a dihedral angle of 1.77 (2)°. An intramolecular O—H...N hydrogen bond forms a six-membered ring with an S(6) motif. Weak intermolecular C—H...O hydrogen bonding is present in the crystal structure.