4-Amino­pyridinium 4-amino­benzene­sulfonate 4-ammonio­benzene­sulfonate monohydrate

摘要

The asymmetric unit of the title compound, C5H7N2 ⁺·C6H6NO3S⁻·C6H7NO3S·H2O, contains one 4-ammonio­benzene­sulfonate zwitterion (⁺H3NC6H4SO3 ⁻), one 4-amino­benzene­sulfonate anion (H2NC6H₄SO₃ ⁻), one 4-amino­pyridinium cation and two half-mol­ecules of water, each lying on a twofold rotation axis. The various ions and molecules in the structure are linked through N—H⋯O, N—H⋯N and N—H⋯S hydrogen bonds and C—H—π inter­actions into a three-dimensional framework.