Acta Cryst. (2008). E64, o782  [ doi:10.1107/S160053680800799X ]

Diethyl 2-[(1-methyl-1H-pyrrol-2-yl)methyleneamino]-5-(2-thienylmethyleneamino)thiophene-3,4-dicarboxylate

S. Dufresne and W. G. Skene

Abstract: Both imine bonds of the title compound, C₂₁H₂₁N₃O₄S₂, were found to be in the E configuration. The terminal pyrrole and thiophene rings are twisted by 2.5 (3) and 2.3 (2)°, respectively, from the mean plane of the central thiophene to which they are attached. The structure is disordered by exchange of the terminal heterocyclic rings; the site occupancy factors are ca 0.8 and 0.2. The crystal packing involves some - stacking [3.449 (4) Å between pyrrole and terminal thiophene rings].

Online 2 April 2008

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