Abstract
In the title compound, C15H9Cl2F3N2O2, the 1,6-dihydropyrano[2,3-c]pyrazole ring system is almost planar, with a maximum deviation of 0.0226 (14) Å, and forms a dihedral angle of 69.90 (6)° with the benzene ring. In the crystal, molecules are linked into a helical chain along the c axis by C—H⋯O hydrogen bonds.
Highlights
In the title compound, C15H9Cl2F3N2O2, the 1,6-dihydropyrano[2,3-c]pyrazole ring system is almost planar, with a maximum deviation of 0.0226 (14) A, and forms a dihedral angle of 69.90 (6) with the benzene ring
Molecules are linked into a helical chain along the c axis by C—HÁ Á ÁO hydrogen bonds
For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986)
Summary
Key indicators: single-crystal X-ray study; T = 100 K; mean (C–C) = 0.002 A; R factor = 0.036; wR factor = 0.096; data-to-parameter ratio = 20.0. Molecules are linked into a helical chain along the c axis by C—HÁ Á ÁO hydrogen bonds. Related literature For background to and the biological activity of pyrazolone derivatives, see: Kokura et al (2005); Sarojini et al (2010); Vaid et al (1986). See: Ramsay & Steel (1985); Ahmad et al (2011). For bond-length data, see: Allen et al (1987). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).
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