title: Bis(1H-imidazol-3-ium) naphthalene-1,5-disulfonate.
abstract: The asymmetric unit of the title organic salt, 2C(3)H(5)N(2) (+)·C(10)H(6)O(6)S(2) (2-), consists of an imidazolium cation and half a naphthalene-1,5-disulfonate dianion, completed to the full dianion through an inversion center. N-H⋯S and N-H⋯O hydrogen bonds link cations and anions in the crystal, forming a chain propagating along [101].
authors.affiliation: Ordered Matter Science Research Center, Southeast University, Nanjing 211189,  People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Wei