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 language | English (US) |
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Pages (from-to) | 321-334 |
Number of pages | 14 |
Journal | Coordination Chemistry Reviews |
Volume | 197 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2000 |
Keywords
- Diamagnetic
- X-ray powder diffraction pattern
- XePtF
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry