Dioxygenyl hexafluoroplatinate
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IUPAC name
Dioxygenyl hexafluoroplatinate
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| Other names
Dioxygenyl hexafluoroplatinate(V)
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3D model (JSmol)
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| Properties | |
| F6O2Pt | |
| Molar mass | 341.07 g·mol−1 |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Dioxygenyl hexafluoroplatinate is a compound with formula O2PtF6. It is a hexafluoroplatinate of the unusual dioxygenyl cation, O2+, and is the first known compound containing this cation. It can be produced by the reaction of dioxygen with platinum hexafluoride. The fact that PtF
6 is strong enough to oxidise O
2, whose first ionization potential is 12.2 eV, led Neil Bartlett to correctly surmise that it might be able to oxidise xenon (first ionization potential 12.13 eV). This led to the discovery of xenon hexafluoroplatinate, which proved that the noble gases, previously thought to be inert, are able to form chemical compounds.
Dioxygenyl hexafluoroplatinate can be synthesized from the elements by the action of a mixture of oxygen and fluorine gas on platinum sponge at 450 °C. It can also be prepared by the reaction of oxygen difluoride (OF
2) with platinum sponge. At 350 °C, platinum tetrafluoride is produced; above 400 °C, dioxygenyl hexafluoroplatinate is formed.
Bartlett demonstrated that it can be synthesized at room temperature by the reaction of oxygen gas with PtF
6.
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