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Acta Cryst. (2013). E69, o581-o582
[ doi:10.1107/S1600536813007307 ]

1-{[4-(4-{[(2-Oxidonaphthalen-1-yl)methylidene]azaniumyl}phenoxy)phenyl]iminiumylmethyl}naphthalen-2-olate

D. Haffar, D. Daoud, T. Douadi, L. Bouzidi and S. Chafaa

Abstract: The title Schiff base compound, C34H24N2O3, was prepared by a condensation reaction of bifunctional aromatic diamine (4,4'-diaminodiphenyl ether) with hydroxynaphtaldehyde. The asymmetric unit contains two independent molecules with similar conformations. The compound contains a central oxygen bridge and two functionalized [(E)-(phenyliminio)methyl]naphthalen-2-olate units. The dihedral angles between the benzene rings linking to the central O atom are 74.64 (19) and 69.85 (18)° in the two independent molecules. Intramolecular O-H...O hydrogen bonding occurs between the protonated imino N atoms and deprotonated hydroxy O atoms in both molecules. In the crystal, weak C-H...O hydrogen bonds are observed.


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