Acta Cryst. (2012). E68, o3332-o3333
[ doi:10.1107/S160053681204593X ]

Diethyl 3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylate

M. Akkurt, A. R. Kennedy, S. H. H. Younes, S. K. Mohamed and G. J. Miller

Abstract: In the title compound, C₁₄H₁₆O₄S₂, the thieno[2,3-b]thiophene ring systems are planar [maximum deviation = 0.008 (2) Å]. The molecular conformation is stabilized by intramolecular C-HO hydrogen bonds, while the crystal packing is stabilized by C-HO, C-H and - stacking [centroid-centroid distance = 3.6605 (14) Å] interactions, which lead to supramolecular layers in the ab plane.

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