N,N′-Bis(3-methoxybenzylidene)ethane-1,2-diamine

Abstract

The molecule of the title bidentate Schiff base ligand, C18H20N2O2, has twofold crystallographic rotation symmetry, giving one half-molecule per asymmetric unit. It adopts a twisted E configuration with respect to the azomethine C=N bond. The imino group is coplanar with the aromatic ring. The dihedral angle between the two benzene rings is 69.52 (5)°. The methoxy group is coplanar with the benzene ring, as indicated by the C—O—C—C torsion angle of −179.56 (8)°. In the unit cell, molecules are linked together by intermolecular C—H...O hydrogen bonds, forming chains along the a axis; these chains are further stacked down the b axis by both intermolecular C—H...O and C—H...π interactions.