2,2′-{1,1′-[Butane-1,4-diylbis(oxynitrilo)]diethylidyne}di-1-naphthol

The title compound, C28H28N2O4, was synthesized by the reaction of 2-acetyl-1-naphthol with 1,4-bis(aminooxy)butane in ethanol. The molecule, which lies about an inversion centre, adopts a linear structure, in which the oxime groups and naphthalene ring systems assume an anti conformation. The intramolecular interplanar distance between parallel naphthalene rings is 1.054 (3) Å. Intramolecular O—H⋯N hydrogen bonds are formed between the oxime nitrogen and hydroxy groups.

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