Abstract
In the title compound, C11H8F3N3O2, there are two molecules in the asymmetric unit wherein the phenyl rings make dihedral angles of 65.3 (2) and 85.6 (2)° with the pyrazole rings. In the crystal, pairs of molecules are held together by O—H⋯O hydrogen bonds between the carboxyl groups, forming a centrosymmetric dimer with an R 2 2(8) motif. Intramolecular N—H⋯O interactions are also present.
Highlights
In the title compound, C11H8F3N3O2, there are two molecules in the asymmetric unit wherein the phenyl rings make dihedral angles of 65.3 (2) and 85.6 (2) with the pyrazole rings
H atoms treated by a mixture of independent and constrained refinement
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BX2218)
Summary
Key indicators: single-crystal X-ray study; T = 125 K; mean (C–C) = 0.004 A; R factor = 0.051; wR factor = 0.140; data-to-parameter ratio = 10.2. C11H8F3N3O2, there are two molecules in the asymmetric unit wherein the phenyl rings make dihedral angles of 65.3 (2) and 85.6 (2) with the pyrazole rings. Pairs of molecules are held together by O—HÁ Á ÁO hydrogen bonds between the carboxyl groups, forming a centrosymmetric dimer with an R22(8) motif. Intramolecular N—HÁ Á ÁO interactions are present. Related literature For general background, see: Caruso & Rossi (2004); Maggio et al, (2008). For hydrogen-bond motifs, see: Bernstein et al (1995)
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