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.
Highlights
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 A, respectively
The dimers are interlinked into polymeric chains along [010] with R34(13) ring motifs by C—HÁ Á ÁO, N—HÁ Á ÁO and O—HÁ Á ÁO hydrogen bonds
The authors acknowledge the provision of funds for the purchase of the diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan
Summary
Key indicators: single-crystal X-ray study; T = 296 K; mean (C–C) = 0.003 A; R factor = 0.030; wR factor = 0.082; data-to-parameter ratio = 7.2. 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 A , respectively. The dihedral angle between the two groups is 6.65 (1). Intramolecular N— HÁ Á ÁO, C—HÁ Á ÁO and O—HÁ Á ÁO hydrogen bonds form S(5), S(6) and S(7) ring motifs. The molecules are dimerized due to C—HÁ Á ÁO and O—HÁ Á ÁO intermolecular hydrogen bonds, with R22(8) ring motifs. The dimers are interlinked into polymeric chains along [010] with R34(13) ring motifs by C—HÁ Á ÁO, N—HÁ Á ÁO and O—HÁ Á ÁO hydrogen bonds. For graph-set notation, see: Bernstein et al (1995)
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