Synthesis and characterization of barium tetrafluoridobromate(III) Ba(BrF4)2

Sergey Ivlev, Vasily Igorevich Sobolev, Markus Hoelzel, Antti J. Karttunen, Thomas Müller, Ivan Gerin, Roman Ostvald, Florian Kraus

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Alkali and alkaline earth metal tetrafluoridobromates MIBrF4, MII(BrF4)2 (MI = Na-Cs, MII = Sr, Ba) can be synthesized from the respective fluorides and BrF3. The reaction of BaF2 with liquid BrF3 under Freon-113 leads to the formation of Ba(BrF4)2 as a colorless microcrystalline powder. Here, we discuss its formation kinetics and thermodynamics. The compound crystallizes in the tetragonal space group I$\bar {4}$ with a = 9.65081(11) Å, c = 8.03453(13) Å, V = 748.32(2) Å3, and Z = 4 at 27 C, and it is isotypic to Ba(AuF4)2. The structure contains square planar BrF4 - anions. The compound is stable at ambient conditions excluding moisture and at temperatures up to approximately 200 C. Solid-state computational calculations of the Raman and IR spectra are in good agreement with the experimentally obtained ones, and in combination with its powder X-ray diffraction pattern, density measurement, thermodynamics, elemental and EDXRF analyses, this shows that the compound is pure.

Original languageEnglish
Pages (from-to)6261-6267
Number of pages7
JournalEuropean Journal of Inorganic Chemistry
Issue number36
Publication statusPublished - 2014



  • Barium
  • IR spectroscopy
  • Raman spectroscopy
  • Recycling
  • Rietveld refinement
  • Structure elucidation
  • Tetrafluoridobromates
  • Waste prevention

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Ivlev, S., Sobolev, V. I., Hoelzel, M., Karttunen, A. J., Müller, T., Gerin, I., ... Kraus, F. (2014). Synthesis and characterization of barium tetrafluoridobromate(III) Ba(BrF4)2. European Journal of Inorganic Chemistry, 2014(36), 6261-6267.