title: 2-[(2-Carboxy-phen-yl)disulfan-yl]benzoic acid-4,4'-bipyridyl N,N'-dioxide (1/2).
abstract: In the title 2:1 adduct, C(14)H(10)O(4)S(2)·0.5C(10)H(8)N(2)O(2), which arose from an unexpected oxidation of a precursor, the dihedral angle between the aromatic rings in the disulfide is 82.51 (11)°. In the crystal, the molecules are linked by O-H⋯O, O-H⋯N and C-H⋯O interactions, generating sheets.
authors.forename: Rodolfo
authors.initials: R
authors.lastname: Moreno-Fuquen
authors.forename: Javier
authors.initials: J
authors.lastname: Ellena
authors.forename: Carlos A
authors.initials: CA
authors.lastname: De Simone
authors.forename: Leandro
authors.initials: L
authors.lastname: Ribeiro
authors.forename: Regina Helena
authors.initials: RH
authors.lastname: De Almeida Santos