Concerning the nature of XePtF6

Lionell Graham, Oliver Graudejus, Narendra K. Jha, Neil Bartlett

Research output: Contribution to journalReview articlepeer-review

105 Scopus citations

Abstract

Interaction of PtF6 vapor with a comparable molar quantity of Xe gas, at ≈ 200C, gives a sticky, red-tinged yellow solid of composition Xe(PtF6)x, with 1 ≤ x ≤ 2, X-ray powder diffraction pattern (XRDP) of which show the presence of XeF+PtF6 - {a =8.081(6); b = 11.087(7); c = 7.226(6) Å; β= 90.01(5)°; VIZ = 161.8(4) Å3} which is isostructural with XeF+RuF6 -. This implies that first formed XePtF6 + PtF6 → XeF+PtF6 - + PtF5 (non-crystalline). When the product having x ≈ 2 is warmed (≤ 60°C) it is converted to the orange-red, friable solid XeF+Pt2Fn11 -: XeF+PtF6 - + PtF5 → XeF+Pt2F11 -. Mixing PtF6 vapor (diluted with SF6 gas), with a large excess of Xe gas, with the product mixture quenched at 77 K, gives a mustard yellow solid of composition ≈ XePtF6. This does not give an XRDP, and is only weakly paramagnetic. Dissolution of PtF4, with a large excess of XeF2 in aHF gives a yellow solution, the 19F NMR spectrum of which reveals PtF6 2-. The diamagnetic, amorphous, aHF-insoluble solid, of composition ≈ XePtF6 obtained from that solution is probably a XeF+ salt of polymeric (PtF5 -)n. The 1:1 product of Xe + PtF6 is also likely to be of this formulation.

Original languageEnglish (US)
Pages (from-to)321-334
Number of pages14
JournalCoordination Chemistry Reviews
Volume197
Issue number1
DOIs
StatePublished - Jan 1 2000

Keywords

  • Diamagnetic
  • X-ray powder diffraction pattern
  • XePtF

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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