Mol­ecules of the title compound, C22H24N2O2S2, lie across centres of inversion. The two thio­pyridine N-oxide groups adopt a stepped trans configuration with respect to the benzene ring, by virtue of the symmetry. The oxopyridinium ring forms a dihedral angle of 79.9 (2)° with the benzene ring. The crystal structure is stabilized by a strong π–π inter­action between the pyridinium rings of adjacent mol­ecules [ring centroid–centroid distance = 3.464 (3) Å].

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In the title compound, C13H11N3, the benzotriazole ring system is essentially planar, with a maximum deviation of 0.0173 (18) Å, and forms a dihedral angle of 75.08 (8)Å with the phenyl ring. In the crystal, pairs of weak C—H⋯N hydrogen bonds form inversion dimers. In addition, there are weak C—H⋯π(arene) inter­actions and weak π–π stacking inter­actions, with a centroid–centroid distance of 3.673 (11) Å.

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