Research Article: Bis(3-amino­propan-1-aminium) naphthalene-1,5-disulfonate dihydrate

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Shan Gao, Seik Weng Ng.


In the title hydrated salt, 2C3H11N2+·C10H6O6S22−·2H2O, the anion lies on a center of inversion; its sulfonate –SO3 group features one S—O bond that is longer than the other two. The O atom of this longer bond is the hydrogen-bond acceptor to the amino H atom of one cation and the ammonium H atom of another cation. In the crystal, N—H⋯O and O—H⋯O hydrogen bonds link the cations, anions and water mol­ecules into a three-dimensional network.

Partial Text

For a related structure, see: Gao & Ng (2012 ▶).