title: Bis(dihydronium) naphthalene-1,5-disulfonate.
abstract: The title compound is a salt, 2 H5O2+ x C10H6O6S2(2-), in which the anion lies across an inversion centre in the space group C2/c, while the cation contains a short but noncentred O-H...O hydrogen bond. The ionic components are linked by charge-assisted O-H...O hydrogen bonds into a three-dimensional framework structure.
authors.affiliation: Departamento de Fisica, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, CEP 35.400-000, Ouro Preto, MG, Brazil.
authors.forename: Genivaldo Júlio
authors.initials: GJ
authors.lastname: Perpétuo
authors.forename: Jan
authors.initials: J
authors.lastname: Janczak