Acta Cryst. (2013). E69, o1021
[ doi:10.1107/S1600536813014931 ]
Abstract: The title zwitterion,, C16H11ClN2O, is approximately planar, the dihedral angle between the benzene ring and naphthalene ring system is 1.55 (13)°; an intramolecular N-HO hydrogen bond stabilizes the planar conformation. In the crystal, - stacking between the benzene ring and the naphthalene ring system of adjacent molecules links the molecules into supramolecular chains running along the b axis, the centroid-centroid distance being 3.765 (2) Å.
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