An unusual O<sup>2-</sup>/F<sup>-</sup> distribution in the new pyrochlore oxyfluorides: Na<sub>2</sub>B<sub>2</sub>O<sub>5</sub>F<sub>2</sub> (B = Nb, Ta) - Archive ouverte HAL Access content directly
Journal Articles Chemical Communications Year : 2022

An unusual O2-/F- distribution in the new pyrochlore oxyfluorides: Na2B2O5F2 (B = Nb, Ta)

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Abstract

Two new oxyfluorides with a pyrochlore-type structure, Na2Nb2O5F2 and Na2Ta2O5F2, have been obtained and for which the XRD crystallographic study coupled with 19F solid state NMR reveals an unusual O/F distribution. Both materials are n-type semiconductors exhibiting photoconductive properties.
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Dates and versions

hal-03631161 , version 1 (05-04-2022)

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Edouard Boivin, Frédérique Pourpoint, Sébastien Saitzek, Pardis Simon, Pascal Roussel, et al.. An unusual O2-/F- distribution in the new pyrochlore oxyfluorides: Na2B2O5F2 (B = Nb, Ta). Chemical Communications, 2022, 58 (14), pp.2391-2394. ⟨10.1039/D1CC06760E⟩. ⟨hal-03631161⟩
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