Abstract
AbstractThe crystal structure of the 2:1 co-crystal of 1,2,5-thiadiazole-3,4-dicarboxylic acid and 4,4′-bipyridine, (C 4 H 2 N 2 O 4 S) 2 ·C 10 H 8 N 2 , has been determined by X-ray diffraction at the monoclinic space group C2/c with cell parameters of a = 21.388(7) A, b = 6.735(2) A, c = 14.877(5) A, β = 110.431(3)°, and Z = 4. There are one molecule of thiadiazole and a half molecule of bipyridine in the asymmetric unit. The dihedral angle between the pyridine ring planes is 40.5(3)°. Two intramolecular O-H···N [2.730(7) A] and O-H···O [2.433(6) A] hydrogen bonds are observed in the thiadiazole molecule. In the crystal structure, the molecules form a unique two-dimensional ladder-type network linked by intermolecular O-H···N [2.704(4) A] hydrogen bonds and S···O [3.100(5) A] heteroatom interactions.Index AbstractIn the crystal structure of the title co-crystal, the molecules form a unique two-dimensional ladder-type network linked by intermolecular O-H···N hydrogen bonds and S···O heteroatom interactions.
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