4-[(E)-4-Bromo­benzyl­ideneamino]-3-[1-(4-isobutyl­phen­yl)eth­yl]-1H-1,2,4-triazole-5(4H)-thione

In the title compound, C(21)H(23)BrN(4)S, the 4-bromo­benzyl­idene group is disordered over two orientations with occupancies of 0.504 (5) and 0.496 (5). One of the methyl groups of the isobutyl unit is disordered over two sites with occupancies of 0.751 (19) and 0.249 (19). The benzene rings of the isobutylphenyl and bromo­phenyl (major disorder component) groups form dihedral angles of 71.63 (11) and 21.8 (3)°, respectively, with the triazole ring. In the crystal, centrosymmetrically related mol­ecules exist as centrosymmetric N—H⋯S hydrogen-bonded dimers.