1,2,3,5-Dithiadiazolyls and 1,2,3,5-diselenadiazolyls; stacking and packing of pi-dimers
by Beer, L.; Cordes, A. W.; Myles, D. J. T.; Oakley, R. T.; Taylor, N. J.
1,2,3,5-Dithiadiazolyl and 1,2,3,5-diselenadiazolyl radicals bearing a 2,5-difluorophenyl substituent crystallize as pi-stacked dimers. In the S-compound the dimer stacks adopt a pinwheel arrangement about a 41 axis with a series of close trans-columnar S---S contacts. In the Se-compound the dimer stacks are packed in a non-centric dovetailed arrangement. The preference for the latter pattern is dictated by structure-making intermolecular F---Se contacts.
- Journal
- CrystEngComm
- Issue
- 20
- Year
- 2000
- URL
- https://dx.doi.org/10.1039/b004875p
- ISBN/ISSN
- 1466-8033
- DOI
- 10.1039/b004875p