Acta Cryst. (2008). E64, o409  [ doi:10.1107/S1600536807068766 ]

2,2'-[2,3,5,6-Tetramethyl-p-phenylenebis(methylenethio)]bis(pyridine N-oxide)

B. Ravindran Durai Nayagam, S. R. Jebas, S. Grace and D. Schollmeyer

Abstract: 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 - interaction between the pyridinium rings of adjacent molecules [ring centroid-centroid distance = 3.464 (3) Å].

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