Acta Cryst. (2009). E65, o1055  [ doi:10.1107/S1600536809013397 ]

Di-4-pyridyl disulfide-isophthalic acid (1/1)

D.-J. Wang, J.-M. Zhao, J. Zhang and J.-L. Lin

Abstract: In the title 1:1 cocrystal, C₁₀H₈N₂S₂·C₈H₆O₄, the asymmetric unit contains an isophthalic acid molecule and a 4,4'-dipyridyl disulfide molecule. The two carboxyl groups of isophthalic acid interact with neighbouring 4,4'-dipyridyl disulfide molecules through O-HN hydrogen bonds, forming a one-dimensional zigzag chain. Neighbouring chains are linked to each other via - stacking interactions between the pyridyl rings of adjacent 4,4'-dipyridyl disulfide molecules [centroid-centroid distance = 3.7346 (6) Å], resulting in a layered motif. The dihedral angle between pyridine rings of 84.13 (7)° and the C-S-S-C torsion angle of 91.95 (1)° confirm the gauche conformation of 4,4'-dipyridyl disulfide.

Online 18 April 2009

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