Crystal structure of piperazine-1,4-diium bis­(4-amino­benzene­sulfonate)

The asymmetric unit of the title salt, C(4)H(12)N(2) (2+)·2C(6)H(6)NO(3)S(−), consists of half a piperazindiium dication, located about an inversion centre, and a 4-amino­benzene­sulfonate anion. The piperazine ring adopts a chair conformation. In the crystal, the cations and anions are linked via N—H⋯O and C—H⋯O hydrogen bonds, forming a three-dimensional framework. Within the framework there are C—H⋯π inter­actions and the N—H⋯O hydrogen bonds result in the formation of R (4) (4)(22) and R (3) (4)(13) ring motifs.