#27
Pcc2
Example – 2,5-Bis(5-bromo-2-thienyl)thiophene
The aromatic molecules are planar but consecutive molecules do not stack in a planar fashion.
Mamoun M. Bader
Acta Cryst. (2009). E65, o2119
CIF
http://journals.iucr.org/e/issues/2009/09/00/ng2619/ng2619sup1.cif