title: Di-4-pyridyl disulfide-isophthalic acid (1/1).
abstract: 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.
authors.affiliation: State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Institute of Solid Materials Chemistry, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.
authors.forename: Dan-Jun
authors.initials: DJ
authors.lastname: Wang
authors.forename: Jun-Ming
authors.initials: JM
authors.lastname: Zhao
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.forename: Jian-Li
authors.initials: JL
authors.lastname: Lin