Na₃Te₂(FeO₄)₃ or Na₃Te₂Fe₃O₁₂, trisodium ditellurium(VI) triiron(III) dodecaoxide, was obtained in the form of single-crystals under hydrothermal conditions. Na₃Te₂(FeO₄)₃ adopts the garnet structure type in space group Ia3d and comprises one Na (multiplicity 24, Wyckoff letter c, site symmetry 2.22), one Te (16 a, .3.), one Fe (24 d, 4..) and one O atom (96 h, 1) in the asymmetric unit. The three-dimensional framework structure is built of [TeO₆] octahedra and [FeO₄] tetrahedra by vertex-sharing. The larger Na+ cations are situated in the interstices of the framework and are eightfold coordinated in the form of a distorted dodecahedron. Quantitative structural comparisons with isotypic Na₃Te₂[(Fe₀.₅Al₀.₅)O₄]₃ and Na₃Te₂(GaO₄)₃ show a high degree of similarity between the three crystal structures.
