Acta Cryst. (2008). E64, o1967 [ doi:10.1107/S1600536808029565 ]
Abstract: The title compound, H3O+·C2H8NO6P2-, contains a disordered H3O+ cation and an NH3C(CH3)(PO3H)2 anion. The three H atoms of the H3O+ cation are statistically distributed over four positions with occupancies of 0.75, resulting in a pseudo tetrahedron. Multiple N-HO and O-HO hydrogen bonds generate an intricate three-dimensional network.
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