Xenon oxytetrafluoride

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Xenon oxytetrafluoride
Ball-and-stick model of xenon oxytetrafluoride
Space-filling model of xenon oxytetrafluoride
Identifiers
3D model (
JSmol
)
ChemSpider
  • InChI=1S/F4OXe/c1-6(2,3,4)5 checkY
    Key: ONRYXFFHIXYZMZ-UHFFFAOYSA-N checkY
  • InChI=1/F4OXe/c1-6(2,3,4)5
    Key: ONRYXFFHIXYZMZ-UHFFFAOYAY
  • F[Xe](F)(F)(F)=O
Properties
XeOF4
Molar mass 223.23 g/mol
Appearance colorless liquid
Density 3.17 g/cm3, liquid
Melting point −46.2 °C (−51.2 °F; 227.0 K)
Reacts with water
Structure
square pyramidal[1][2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Xenon oxytetrafluoride (

silica[3] or NaNO
3:[5]

NaNO
3 + XeF
6 → NaF + XeOF
4 + FNO
2

A high-yield synthesis proceeds by the reaction of XeF
6 with POF
3 at −196 °C (−320.8 °F; 77.1 K).[6]

Like most xenon oxides, it is extremely reactive, and it hydrolyses in water to give hazardous and corrosive products, including hydrogen fluoride:

2 XeOF
4 + 4 
O
2

In addition, some ozone and fluorine is formed.

Reactions

XeOF
4 reacts with H
2O in the following steps:

XeOF
4 + H
2O → XeO
2F
2 + 2 HF
XeO
2F
2 + H
2O → XeO
3 + 2 HF

The XeO
3 formed is a dangerous explosive, decomposing explosively to Xe and O
2:

2 XeO
3 → 2 Xe + 3 O
2

In its liquid form, XeOF
4 exhibits amphoteric behaviour, forming complexes with both strong Lewis bases like CsF and strong Lewis acids like SbF
5.[7] It forms a 1:1 adduct with XeF
2, isostructural with XeF
2·IF
5,[8] as well as various heavy alkali metal fluorides.[4]

The reaction of XeOF
4 with XeO
3 provides a convenient synthesis route for XeO
2F
2.[9]

External links

  • Xenon tetrafluoride oxide in Linstrom, Peter J.; Mallard, William G. (eds.); NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg (MD) (retrieved 2022-04-13)

References

  1. ISSN 0021-9606
    .
  2. ^
    S2CID 42752536
    .
  3. ^
    OCLC 1373069
    .
  4. ^
    ISSN 0020-1669
    .
  5. ISSN 0020-1669
    .
  6. ISSN 0020-1669
    .
  7. ISSN 0022-1139
    .
  8. OCLC 1770423
    .
  9. ISSN 1089-5639
    .
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