Abstract
In the zwitterionic title compound, C17H11NO5, the dihedral angle between the two aromatic rings is 76.90 (7)°. The dihedral angles between the carboxyl groups and the benzene ring are 64.02 (9) and 21.67 (9)°, the larger angle being associated with an intramolecular N—H⋯Ocarboxyl hydrogen bond, resulting from proton transfer from the carboxylic acid group to the quinoline N atom and giving an S(9) ring motif. In the crystal, molecules are connected by O—H⋯O hydrogen bonds into chains extending along the b-axis direction. An overall two-dimensional network structure is formed through π–π interactions between the quinoline rings [minimum ring-centroid separation = 3.6068 (6) Å].
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More From: Acta Crystallographica Section E Structure Reports Online
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