inorganic compounds
The title compound, sodium manganate tellurate, was obtained by hydrothermal synthesis and adopts a superstructure related to the CaFe2O4 structure type, with the Mn and Te atoms ordered along the b axis (short axis in the CaFe2O4 structure). Electron counting schemes show that this compound is a mixed-valence MnII/MnIII compound, and bond valence sums are used to suggest that there is no site preference for the higher charged Mn atom.