Crystal structure of 3-benzyl-1-[(1,2,3,4-tetra-hydro-naphthalen-1-yl-idene)amino]-thio-urea.

In the title compound, C18H19N3S, the dihedral angle between the planes of the benzene rings is 58.63 (8)°. The six-membered ring bonded to the thio-semicarbazide group (r.m.s. deviation = 0.038 Å) adopts a sofa conformation, with one of the methyl-ene-group C atoms as the flap. A short intra-molecular N-H⋯N contact is observed. In the crystal, mol-ecules are linked by weak N-H⋯S inter-actions to generate C(4) chains propagating in the [010] direction, with adjacent mol-ecules related by glide symmetry.