N-(4-Chloro-butano-yl)-N'-[2-(trifluoro-meth-yl)phen-yl]thio-urea.

In the title compound, C(12)H(12)ClF(3)N(2)OS, the dihedral angle between the benzene ring and the thio-urea fragment is 69.41 (5)°. The thio-urea N-H atoms adopt an anti conformation, such that one of them forms an intra-molecular N-H⋯O hydrogen bond, generating an S(6) ring. In the crystal, both N-H groups form inversion dimers, one via a pair of N-H⋯S hydrogen bonds and one via a pair of N-H⋯O hydrogen bonds. These lead to R(2) (2)(8) and R(2) (2)(12) loops, respectively. Weak C-H⋯Cl, C-H⋯F, C-H⋯S and π-π [centroid-centroid separation = 3.7098 (6)Å and slippage = 1.853 Å] inter-actions also occur.