Abstract
Three independent molecules comprise the asymmetric unit of the title compound, C
23
H
20
ClF
3
N
4
S. The conformations of the molecules are similar with the chlorobenzene and CF
3
-benzene rings almost perpendicular to, and almost co-planar with, the pyrimidinyl ring [range of dihedral angles = 80.36 (13)–88.07 (14) and 11.89 (14)–23.30 (14)°, respectively]; the benzene rings are roughly orthogonal to each other [64.81 (16)–72.16 (15)°]. In the crystal, two of the independent molecules associate
via
weak N—H⋯N(cyano) hydrogen bonds and 12-membered {⋯HNC
3
N}
2
synthons; the third independent molecule self-associates similarly but about a centre of inversion. The sample studied was found to be a non-merohedral twin and the minor twin component refined to 47.16 (7)%.