The title zwitterion,, C16H11ClN2O, is approximately planar, the dihedral angle between the benzene ring and naphthalene ring system is 1.55 (13)°; an intra-molecular N-H⋯O hydrogen bond stabilizes the planar conformation. In the crystal, π-π stacking between the benzene ring and the naphthalene ring system of adjacent mol-ecules links the mol-ecules into supra-molecular chains running along the b axis, the centroid-centroid distance being 3.765 (2) Å.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3772459 | PMC |
| http://dx.doi.org/10.1107/S1600536813014931 | DOI Listing |
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