Raman spectra fluoride solutions

The spectra change with the concentration of the solution. In concentrated solution the pattern is reminiscent of [XeF5F ]4 and this must be the major species present at intermediate concentrations the main spectroscopic features closely resemble those of Xe Fh in HF and in dilute solution the Raman spectrum is dominated by lines due to XeFJ. No Raman lines due to the anion HFJ or its solvates are observed, but this is common for HF solutions. Xenon hexafluoride clearly behaves as a base in anhydrous hydrogen fluoride, and the principal equilibria may be written ... 

The Raman spectrum of a solution of BiFg in hydrogen fluoride shows lines due to the pentafluoride only, indicating that it is a weaker Lewis acid than SbFg, but on addition of caesium fluoride, CsBiFg could be obtained as a solvate with 2—3 moles of HF. The Raman spectrum was assigned on the basis of octahedral symmetry. 

HF solutions of xenon oxide tetra-fluoride Raman spectrum and hydrolysis studies 52... 

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