Date Published: June 01, 2011
Publisher: International Union of Crystallography
Author(s): Zeliha Baktır, Mehmet Akkurt, S. Samshuddin, B. Narayana, H. S. Yathirajan.
In the title molecule, C16H12F2N2O, the pyrazole ring adopts a slight envelope conformation with the methylene C atom deviating by 0.114 (3) Å from the mean plane of the other four atoms [maximum deviation = 0.021 (3) Å]. The dihedral angles between the four essentially planar atoms of the pyrazole ring and the fluoro-substituted benzene rings are 2.6 (2) and 82.2 (2)°. The dihedral angle between the two benzene rings is 83.7 (2)°. The crystal packing is stabilized by weak intermolecular C—H⋯O hydrogen bonds.
For the biological activity of pyrazolines, see: Hes et al. (1978 ▶); Manna et al. (2005 ▶); Amir et al. (2008 ▶); Regaila et al. (1979 ▶); Sarojini et al. (2010 ▶). For their importance in organic synthesis, see: Bhaskarreddy et al. (1997 ▶); Klimova et al. (1999 ▶). For related structures, see: Butcher et al. (2007 ▶); Cui & Li (2010 ▶); Fun et al. (2010a ▶,b ▶); Jasinski et al. (2010a ▶,b ▶); Baktır et al. (2011 ▶).