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In the title thione, C26H36N6OS, the 1,2,4-triazole ring is planar (r.m.s. deviation = 0.020 Å) and the benzene ring is twisted out of this plane [dihedral angle = 62.35 (12)°]. Supra­molecular zigzag chains feature in the crystal packing. These are sustained by O—H...N(piperazine) hydrogen bonds, and are connected into the three-dimensional crystal structure by C—H...S and C—H...O inter­actions. The crystal studied was a racemic twin.

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In the title compound, C31H38N6OS, the conformation about the N=C [1.285 (2) Å] imine bond is E. The piperazine ring has a chair conformation and occupies a position almost perpendicular to the plane through the triazole ring; the benzene ring forms a dihedral angle of 31.95 (10)° with the triazole ring. Overall, the mol­ecule has the shape of a flattened bowl. The hy­droxy group is disordered over two positions. The major component has a site-occupancy factor of 0.762 (3) and forms an intra­molecular O—H...N(imine) bond to close an S(6) loop. The minor component of the disordered hy­droxy group forms an O—H...N(piperazine) hydrogen bond. These, along with C—H...S and C—H...N inter­actions, link mol­ecules into a three-dimensional architecture.

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The asymmetric unit of the title dichloro­methane hemisolvate, C24H33N5S·0.5CH2Cl2, comprises an adamantan­yl/triazole derivative and half a CH2Cl2 mol­ecule of crystallization; the latter is disordered about a twofold axis of symmetry. The piperazine ring has a chair conformation and the two N-bound substituents occupy equatorial positions. The piperazine residue is almost normal to the triazole ring [N—N—C—N torsion angle = −79.9 (3)°] so that to a first approximation, the mol­ecule has an L-shape. Linear supra­molecular chains parallel to [001] are formed via C—H...S inter­actions. Two such chains are linked into a double chain via C—H...Cl inter­actions involving the disordered CH2Cl2 mol­ecules of solvation.
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