New layered oxide-fluoride perovskites

KNaNbOF5 and KNaMO2F4 (M = Mo6+, W6+)

Rachelle Ann F Pinlac, Charlotte L. Stern, Kenneth R Poeppelmeier

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

KNaNbOF5 and KNaMO2F4 (M = Mo6+, W6+), three new layered oxide-fluoride perovskites with the general formula ABB'X6, form from the combination of a secondorder Jahn-Teller d0 transition metal and an alkali metal (Na+) on the B-site. Alternating layers of cation vacancies and K+ cations on the A-site complete the structure. The K+ cations are found in the A-site layer where the fluoride ions are located. The A-site is vacant in the adjacent A-site layer where the axial oxides are located. This unusual layered arrangement of unoccupied A-sites and under bonded oxygen has not been observed previously although many perovskite-related structures are known.

Original languageEnglish
Pages (from-to)3-14
Number of pages12
JournalCrystals
Volume1
Issue number1
DOIs
Publication statusPublished - Mar 18 2011

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perovskites
Fluorides
Oxides
fluorides
Cations
Positive ions
cations
oxides
Alkali Metals
Alkali metals
Perovskite
alkali metals
Vacancies
Transition metals
transition metals
Ions
Oxygen
oxygen
ions

Keywords

  • Hydrothermal synthesis
  • Oxide-fluorides
  • Perovskites

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Materials Science(all)
  • Condensed Matter Physics
  • Chemical Engineering(all)

Cite this

New layered oxide-fluoride perovskites : KNaNbOF5 and KNaMO2F4 (M = Mo6+, W6+). / Pinlac, Rachelle Ann F; Stern, Charlotte L.; Poeppelmeier, Kenneth R.

In: Crystals, Vol. 1, No. 1, 18.03.2011, p. 3-14.

Research output: Contribution to journalArticle

Pinlac, Rachelle Ann F ; Stern, Charlotte L. ; Poeppelmeier, Kenneth R. / New layered oxide-fluoride perovskites : KNaNbOF5 and KNaMO2F4 (M = Mo6+, W6+). In: Crystals. 2011 ; Vol. 1, No. 1. pp. 3-14.
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