4-Bromo­benzoic acid–6-(4-bromo­phen­yl)-3-methyl-1,2,4-triazolo[3,4-b][1,3,4]thia­diazole (1/1)

In the title 1:1 co-crystal, C(10)H(7)BrN(4)S·C(7)H(5)BrO(2), the triazolothia­diazole system is approximately planar [with a maximum deviation of 0.030 (4) Å] and forms a dihedral angle of 8.6 (1)° with the bromo­phenyl ring. In the carb­oxy­lic acid mol­ecule, the carboxyl group is rotated by 6.4 (3)° out of the benzene ring plane. The crystal structure features O—H⋯N and C—H⋯O hydrogen bonds, π–π stacking inter­actions [centroid–centroid distances = 3.713 (2), 3.670 (2) and 3.859 (3) Å] and short S⋯N [2.883 (4) Å] contacts.