Acta Cryst. (2008). E64, o1657-o1658  [ doi:10.1107/S1600536808023738 ]

4,4'-Dimethoxy-2,2'-[1,1'-(propane-1,3-diyldinitrilo)diethylidyne]diphenol

H.-K. Fun and R. Kia

Abstract: In the crystal structure, the title Schiff base compound, C₂₁H₂₆N₂O₄, has twofold rotation symmetry. The imino group is coplanar with the aromatic ring. An intramolecular O-HN hydrogen bond forms a six- membered ring, producing an S(6) ring motif. The two benzene rings are almost perpendicular to each other, making a dihedral angle of 85.00 (2)°. The methoxy group is approximately coplanar with the benzene ring, with a C-O-C-C torsion angle of 2.34 (12)°. Neighbouring molecules are linked together by weak intermolecular C-HO hydrogen bonds and a C-H interaction, forming a sheet parallel to the ab plane. The molecules also adopt a zigzag arrangement along the c axis.

Online 6 August 2008

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