The title compound, C20H10N4S, and its dipyridinium salt, 4,4′-(2,1,3-benzodiazol-4,7-diyldiethynyl)dipyridinium diperchlorate, C20H12N4S2+· 2ClO4-, display bond alternation in the 2,1, 3-benzothiadiazole rings, which suggests their quinonoid character. The dipyridinium dication molecules stack along the a axis and form a dimer with short S···N interheteroatom contacts [3.146 (4) Å] between the two 1,2,5-thiadiazole rings. The dimer is surrounded by the perchlorate anions with which it forms a large number of intermolecular N-H···O and C-H···O hydrogen bonds.
|Number of pages||3|
|Journal||Acta Crystallographica Section C: Crystal Structure Communications|
|Publication status||Published - 2001 Jun 1|
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)