Abstract
In the title compound, C14H11NO2, the tricyclic aromatic ring system is essentially planar [maximum deviation = 0.025 (2) Å]. The dihedral angle between the two benzene rings is 2.8 (5)°, while the carboxyl group forms a dihedral angle of 88.5 (1)° with the pyrrole ring. Intermolecular O—H⋯O hydrogen bonds may contribute to the overall stabilization of the crystal structure.
Highlights
In the title compound, C14H11NO2, the tricyclic aromatic ring system is essentially planar [maximum deviation = 0.025 (2) A ]
Intermolecular O— HÁ Á ÁO hydrogen bonds may contribute to the overall stabilization of the crystal structure
H atoms treated by a mixture of independent and constrained refinement
Summary
Key indicators: single-crystal X-ray study; T = 93 K; mean (C–C) = 0.003 A; R factor = 0.048; wR factor = 0.093; data-to-parameter ratio = 15.9. C14H11NO2, the tricyclic aromatic ring system is essentially planar [maximum deviation = 0.025 (2) A ]. The dihedral angle between the two benzene rings is 2.8 (5), while the carboxyl group forms a dihedral angle of 88.5 (1) with the pyrrole ring. Intermolecular O— HÁ Á ÁO hydrogen bonds may contribute to the overall stabilization of the crystal structure. Related literature For the use of the title compound in high-performance liquid chromatography, see: Jinmao et al (2001). For synthesis: Xie et al (2006). Monoclinic, C2=c a = 32.067 (19) Ab = 5.340 (3) Ac = 13.134 (7) A = 97.756 (8) V = 2229 (2) A 3
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