title: 2,2'-Dithio-diterephthalic acid.
abstract: In the title mol-ecule, C(16)H(10)O(8)S(2), the two aromatic rings form a dihedral angle of 87.97 (12)°. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds [O⋯O = 2.623 (3)-2.639 (3) Å] link the mol-ecules into layers parallel to the ab plane.
authors.affiliation: Department of Chemistry, Lishui University, 323000 Lishui, ZheJiang, People's Republic of China.
authors.forename: Ling
authors.initials: L
authors.lastname: Zhang