Crystal structure of 3-benzyl-1-[(1,2,3,4-tetra­hydro­naphthalen-1-yl­idene)amino]­thio­urea

In the title compound, C(18)H(19)N(3)S, the dihedral angle between the planes of the benzene rings is 58.63 (8)°. The six-membered ring bonded to the thio­semicarbazide group (r.m.s. deviation = 0.038 Å) adopts a sofa conformation, with one of the methyl­ene-group C atoms as the flap. A short intra­molecular N—H⋯N contact is observed. In the crystal, mol­ecules are linked by weak N—H⋯S inter­actions to generate C(4) chains propagating in the [010] direction, with adjacent mol­ecules related by glide symmetry.