title: Diammonium biphenyl-4,4'-disulfonate.
abstract: In the title salt, 2NH(4) (+)·C(12)H(8)O(6)S(2) (2-), the dianion has crystallographic inversion symmetry. A three-dimensional framework is formed from primary hydrogen-bonded sheet structures comprising ammonium N-H⋯O(sulfonate) inter-actions and is linked peripherally through the biphenyl residues of the anions. This open framework has 43 Å(3) solvent-accessible voids.
authors.forename: Graham
authors.initials: G
authors.lastname: Smith
authors.forename: Urs D
authors.initials: UD
authors.lastname: Wermuth
authors.forename: Peter C
authors.initials: PC
authors.lastname: Healy