3-(2,4-Dichlorophenyl)-5-(4-Fluorophenyl)-2-Methyl-7-(Trifluoromethyl)Py Razolo[1,5-A] Pyrimidine

In the title compound, C20H11Cl2F4N3, the central pyrazolo[1,5-a] pyrimidine unit is almost planar [the mean deviation from the best least- square plane through the nine atoms is 0.006 (2) angstrom]. The fluorobenzene ring is rotated out of this plane by 10.3 (3)degrees, whereas the dichlorobenzene ring is rotated by 46.2 (3)degrees. The crystal packing is dominated by Cl center dot center dot center dot Cl interactions of 3.475 (3) angstrom and van der Waals interactions.