Abstract
The solvothermal reaction of gallium oxide with phosphoric acid in water/ethylene glycol in the presence of piperazine gave the title compound, bis(piperazinium) bis(dihydrogenphosphato)tetra-μ 2 - hydrogenphosphato-di-μ 3 -hydroxo-di-μ 3 -phosphato- tetragallate(III), (C 4 H 12 N 2 ) 3 [Ga 4 (OH) 2 (H 2 PO 4 ) 2 -(HPO 4 ) 4 (PO 4 ) 2 ]. The compound is isostructural with its Fe III analogue, and contains one-dimensional anionic chains with piperazinium cations lying between them. The tetranuclear anionic building blocks and the piperazinium cations lie on inversion centres. © 2006 International Union of Crystallography All rights reserved.