The XeF2–MF5(M = Sb, Ta, or Nb) systems: vibrational spectra of solid xenon difluoride adducts
- 1 January 1975
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 535-540
- https://doi.org/10.1039/dt9750000535
Abstract
The i.r. and Raman spectra of the compounds 2XeF2·MF5(M = Sb or Ta). XeF2·MF5, and XeF2·2MF5(M = Sb, Ta, or Nb) have been measured, and it has been shown that, although the spectra are best interpreted in terms of ionic formulations involving [XeF]+ and [Xe2F3]+, there is increasing covalent character in the series, XeF2·SbF5 < XeF2·TaF5 < XeF2·NbF5, XeF2·2SbF5 < XeF2·2TaF5 < XeF2·2NbF5 and 2XeF2·SbF5 < 2XeF2·TaF5. Weight-loss versus time-of-pumping studies on the products of reaction of large excesses of XeF2 with the pentafluorides have shown that, in addition to the simple 2:1, 1 : 1, and 1 : 2 compounds, species with compositions [2XeF2·Xe2F3]+[SbF6]–, [XeF2·XeF]+[TaF6]–, and [XeF2·XeF]+[NbF6]– are also formed.Keywords
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