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

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 65; no. Pt 5; p. o1055
• Main Authors: Wang, Dan-Jun, Zhao, Jun-Ming, Zhang, Jie, Lin, Jian-Li
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 18.04.2009
• Subjects: Organic Papers
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536809013397

In the title 1:1 cocrystal, C(10)H(8)N(2)S(2)·C(8)H(6)O(4), the asymmetric unit contains an isophthalic acid mol-ecule and a 4,4'-dipyridyl disulfide mol-ecule. The two carboxyl groups of isophthalic acid inter-act with neighbouring 4,4'-dipyridyl disulfide mol-ecules through O-H⋯N hydrogen bonds, forming a one-dimensional zigzag chain. Neighbouring chains are linked to each other via π-π stacking inter-actions between the pyridyl rings of adjacent 4,4'-dipyridyl disulfide mol-ecules [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.