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4,7-bis(4-pyridylethynyl)-2,1,3-benzothiadiazole and Its Dipyridinium Diperchlorate

4,7-bis(4-pyridylethynyl)-2,1,3-benzothiadiazole and Its Dipyridinium Diperchlorate

M Akhtaruzzaman, M Tomura, Y Yamashita

Acta Crystallogr C. 2001 Jun;57(Pt 6):751-3.

PMID: 11408695

Abstract:

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) A] 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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP288071874	4,7-Bis(2-bromo-5-thienyl)-2,1,3-benzothiadiazole		288071-87-4	Price

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