Crystal structure of 3-(adamantan-1-yl)-4-(4-chloro­phen­yl)-1H-1,2,4-triazole-5(4H)-thione

The title compound, C(18)H(20)ClN(3)S, is a functionalized triazoline-3-thione derivative. The benzene ring is almost perpendic­ular to the planar 1,2,4-triazole ring [maximum deviation = 0.007 (1) Å] with a dihedral angle of 89.61 (5)° between them and there is an adamantane substituent at the 3-position of the triazole­thione ring. In the crystal, N—H⋯S hydrogen-bonding inter­actions link the mol­ecules into chains extending along the c-axis direction. The crystal packing is further stabilized by weak C—H⋯π inter­actions that link adjacent chains into a two-dimensional structure in the bc plane. The crystal studied was an inversion twin with a 0.50 (3):0.50 (3) domain ratio.