Crystal structure of zinc-tetrametaphosphate octahydrate: Zn2P4O12 · 8 H2O

Crystal structure of zinc tetrametaphosphate octahydrate: Zn₂P₄O₁₂ · 8 H₂O has been solved using 1888 X-ray reflections with a final R value: 0.031. This salt is triclinic, P1 , with Z = 1 and the following unit cell dimensions: a = 8.610(5), b = 7.137(5), c = 7.108(5) Å, α = 96.09(5), β = 105.99(5), γ = 100.49(5)°. This salt is the third example of an hydrated tetrametaphosphate of a bivalent cation. The two zinc atoms are octahedrally coordinated. A complete hydrogen bond scheme is given.