Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)

organic compounds

Acta Cryst. (2013). E69, o1322-o1323    [ doi:10.1107/S160053681302014X ]


S. Chetioui, I. Boudraa, S. Bouacida, A. Bouchoul and S. E. Bouaoud

Abstract: The title zwitterion, C17H14N2O2, crystallizes with two independent mol­ecules in the asymmetric unit, both of which are approximately planar, the dihedral angles between the benzene ring and the naphthalene ring system being 4.39 (12)° in one mol­ecule and 5.83 (12)° in the other, and show an E conformation with respect to the azo double bond. An intra­molecular N-H...O hydrogen bond in each molecule helps to establish their near planar conformation. In the crystal, mol­ecules are linked through O-H...O hydrogen bonds into infinite chains running along the a-axis direction. In addition, the chains are stacked along the b axis via [pi]-[pi] inter­actions between the benzene and the naphthalene rings of adjacent mol­ecules, the centroid-centroid distances being 3.722 (3) and 3.823 (4) Å.

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