The iron phosphate NaZnFe2 PO43.

Crystals of sodium zinc diiron(III) triphosphate, NaZnFe(2)(PO(4))(3), have been synthesized and structurally characterized by single-crystal X-ray diffraction. The compound features a new structural type built up from ZnO(6) octahedra, FeO(6) octahedra and FeO(4) tetrahedra, linked together via the corners and edges of PO(4) tetrahedra to form a three-dimensional framework, with tunnels running along [100]. Within these tunnels, Na(+) cations occupy a highly distorted cubic site.