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The previously unknown crystal structure of sodium strontium vanadate, NaSrVO$$_4$$4, is determined and refined from laboratory X-ray powder diffraction data. The title compound exhibits the larnite $$\beta\text{-}\textrm{Ca}_2\textrm{SiO}_4$$β-Ca2SiO4 structure. This is… Click to show full abstract
The previously unknown crystal structure of sodium strontium vanadate, NaSrVO$$_4$$4, is determined and refined from laboratory X-ray powder diffraction data. The title compound exhibits the larnite $$\beta\text{-}\textrm{Ca}_2\textrm{SiO}_4$$β-Ca2SiO4 structure. This is the first report of such chemistry $$\textrm{A}^{I}\textrm{B}^{II}\textrm{XO}_{4}$$AIBIIXO4, which exhibits this structural type. $$\textrm{NaSrVO}_4$$NaSrVO4 exhibits 2 first-order-phase transitions above room temperature towards, respectively, an orthorhombic phase and an $$\alpha\text{-}\textrm{Ca}_2\textrm{SiO}_4$$α-Ca2SiO4 hexagonal-related structure.
Journal Title: Physics and Chemistry of Minerals
Year Published: 2017
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