The title compound, methylammonium trigallium triphosphate hydroxide,
[CH3NH3][Ga3(PO4)3OH], exists as methylammonium cations in cavities wi
thin a zeolite-like hydroxygalliophosphate framework. The framework ha
s the overall formula [Ga3P3O13H]-and contains Ga in tetrahedral and f
ivefold coordination and PO4 as tetrahedra.