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Mol­ecules of the title compound, C 22 H 24 N 2 O 2 S 2 , 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].

2,2′-[2,3,5,6-Tetramethyl-p-phenylenebis(methylenethio)]bis(pyridineN-oxide)