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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

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
Volume2014
Issue number36
DOIs
Publication statusPublished - 2014

Keywords

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

ASJC Scopus subject areas

  • Inorganic Chemistry

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