2,5-Diethoxy-1,4-bis(3,4-ethylenedioxy-2-thienyl)benzene and its Tetrahydrofuran 0.33-Solvate

The crystal structures of the title compounds, 2,5-diethoxy-1,4-bis(3,4-ethylenedioxy-2-thienyl)benzene, C₂₂H₂₂O₆S₂, (I), and its one-third tetrahydrofuran (THF) solvate, C₂₂H₂₂O₆S₂.1/3C₄H₈O, (II), were studied to determine the relative geometry of the benzene and thienyl rings. The dihedral angles between the benzene and thienyl rings are 6.04 (9)° and 2.0 (1)° in (I) and (II), respectively, compared with 27.5 (2)° in the unsubstituted analog 1,4-bis(3,4-ethylenedioxy-2-thienyl)benzene. The benzene and thienyl rings are more distorted in the title structures compared with the unsubstitued analog.

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