F. Shah, Saqib Ali, M. Tahir
Nov 13, 2010
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Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
In the title compound, C10H9NO4, the 2-hydroxyanilinic and the 4-oxobut-2-enoic acid groups are almost planar, with r.m.s. deviations of 0.0086 and 0.0262 Å, respectively. The dihedral angle between the two groups is 6.65 (1)°. Intramolecular N—H⋯O, C—H⋯O and O—H⋯O hydrogen bonds form S(5), S(6) and S(7) ring motifs. In the crystal, the molecules are dimerized due to C—H⋯O and O—H⋯O intermolecular hydrogen bonds, with R 2 2(8) ring motifs. The dimers are interlinked into polymeric chains along [010] with R 4 3(13) ring motifs by C—H⋯O, N—H⋯O and O—H⋯O hydrogen bonds.