Platinum hexafluoride

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Platinum hexafluoride
Names
IUPAC name
Platinum(VI) fluoride
Other names
Platinum hexafluoride
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.033.816 Edit this at Wikidata
EC Number
  • 237-214-0
  • InChI=1S/6FH.Pt/h6*1H;/q;;;;;;+2/p-6 checkY
    Key: NHVLQWBIZQMDAU-UHFFFAOYSA-H checkY
  • InChI=1S/6FH.Pt/h6*1H;/q;;;;;;+2/p-6
  • Key: NHVLQWBIZQMDAU-UHFFFAOYSA-H
  • F[Pt](F)(F)(F)(F)F
Properties
PtF6
Molar mass 309.07 g/mol
Appearance dark-red crystals
Density 3.83 g/cm3
Melting point 61.3 °C (142.3 °F; 334.4 K)
Boiling point 69.14 °C (156.45 °F; 342.29 K)
Reacts with water
Structure
Orthorhombic, oP28
Pnma, No. 62
octahedral (Oh)
0
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Strong oxidizer
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
4
0
3
OX
Related compounds
Related compounds
Platinum(V) fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Platinum hexafluoride is the

picometers.[1]

Synthesis

PtF6 was first prepared by reaction of fluorine with platinum metal.[2] This route remains the method of choice.[1]

Pt + 3 F2 → PtF6

PtF6 can also be prepared by disproportionation of the pentafluoride (PtF5), with the tetrafluoride (PtF4) as a byproduct. The required PtF5 can be obtained by fluorinating PtCl2:

2 PtCl2 + 5 F2 → 2 PtF5 + 2 Cl2
2 PtF5 → PtF6 + PtF4

Hexafluoroplatinates

Platinum hexafluoride can gain an electron to form the hexafluoroplatinate anion, PtF−
6. It is formed by reacting platinum hexafluoride with relatively uncationisable elements and compounds, for example with xenon to form "XePtF
6" (actually a mixture of XeFPtF
5, XeFPt
2F
11, and Xe
2F
3PtF
6), known as xenon hexafluoroplatinate. The discovery of this reaction in 1962 proved that noble gases form chemical compounds. Previous to the experiment with xenon, PtF
6 had been shown to react with oxygen to form [O2]+[PtF6]−, dioxygenyl hexafluoroplatinate.

See also

References

  1. ^
    doi:10.1021/ic052029f
  2. doi:10.1021/ja01578a073
    .

General reading
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