Received 5 March 2008
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].
Data collection: SMART (Bruker, 2003); cell refinement: SMART; data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: UdMX (Marris, 2004).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FL2192 ).
The authors acknowledge financial support from the Natural Sciences and Engineering Research Council Canada, the Centre for Self-Assembled Chemical Structures, and Canada Foundation for Innovation. SD thanks the Université de Montréal for a graduate scholarship.
Bruker (2003). SMART. Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2004). SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Dufresne, S., Bourgeaux, M. & Skene, W. G. (2006). Acta Cryst. E62, o5602-o5604.
Dufresne, S., Bourgeaux, M. & Skene, W. G. (2007). J. Mater. Chem. 17, 1166-1177.
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.
Marris, T. (2004). UdMX. Université de Montréal, Montréal, Québec, Canada.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.