K3Ga2(PO4)3 and Na3Ga(PO4)2.

The structures of tripotassium digallium tris(phosphate), K3Ga2(PO4)3, and tris­odium gallium bis(phosphate), Na3­Ga(PO4)2, have different irregular one-dimensional alkali ion-containing channels along the a axis of the ortho­rhom­bic and triclinic unit cells, respectively. The anionic subsystems consist of vortex-linked PO4 tetra­hedra and GaO4 tetra­hedra or GaO5 trigonal bipyramids in the first and second structure, respectively.