Lewis Acidic Behavior of MoOF4 towards the Alkali Metal Fluorides in Anhydrous Hydrogen Fluoride Solutions

Riane E. Stene, Benjamin Scheibe, Antti J. Karttunen, Winfried Petry, Florian Kraus

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20 Scopus citations

Abstract

Previous studies performed on samples of MoOF4 dissolved in anhydrous hydrogen fluoride (aHF) solutions have indicated the presence of the [Mo2O2F9] anion. Building upon this earlier work, MoOF4, and MF (M = Li–Cs) were dissolved in aHF solutions to produce M[Mo2O2F9] (M = Li–Cs) salts. Structural analysis of the obtained compounds was performed using single-crystal X-ray diffraction. This study provides the first single crystal structures for the [MoVI 2O2F9] anion. Additionally, IR and Raman spectroscopy were used to characterize each salt. These spectra were compared to calculated ones for the solid-state structure of each salt using the DFT-PBE0 density functional method. The calculated spectra were used to give band assignments in the experimentally obtained spectra.

Original languageEnglish
Pages (from-to)3672-3682
Number of pages11
JournalEuropean Journal of Inorganic Chemistry
Volume2019
Issue number32
DOIs
StatePublished - 31 Aug 2019

Keywords

  • Crystal structures
  • Fluorides
  • IR spectroscopy
  • Molybdenum
  • Oxides
  • Raman spectroscopy

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