Crystal structure of 4-sulfamoylanilinium di-hydrogen phosphate

In the crystal structure of the title mol-ecular salt, C6H9N2O2S(+)·H2PO4 (-), the sulfomylalinium cations and the di-hydrogen phosphate anions form independent [100] chains through Ns-H⋯O (s = sulfamo-yl) and O-H⋯O hydrogen bonds, respectively. The chains are cross-linked by Na-H⋯O (a = amine) hydrogen bonds, generating (010) sheets. Two C-H⋯O hydrogen bonds involving diametrically opposite C atoms in the benzene ring of the cation as donors form chains parallel to [202] in which P=O and P-OH groups are acceptors. Together, these inter-actions lead to a three-dimensional network.