Abstract

The previously unknown crystal structure of sodium strontium vanadate, NaSrVO $$_4$$ , is determined and refined from laboratory X-ray powder diffraction data. The title compound exhibits the larnite $$\beta\text{-}\textrm{Ca}_2\textrm{SiO}_4$$ structure. This is the first report of such chemistry $$\textrm{A}^{I}\textrm{B}^{II}\textrm{XO}_{4}$$ , which exhibits this structural type. $$\textrm{NaSrVO}_4$$ exhibits 2 first-order-phase transitions above room temperature towards, respectively, an orthorhombic phase and an $$\alpha\text{-}\textrm{Ca}_2\textrm{SiO}_4$$ hexagonal-related structure.

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