Argon fluorohydride

Summary

Argon fluorohydride (systematically named fluoridohydridoargon) or argon hydrofluoride is an inorganic compound with the chemical formula HArF (also written ArHF). It is a compound of the chemical element argon.

Argon fluorohydride
Argon fluorohydride
Names
Other names
Argon hydrofluoride
Identifiers
  • 163731-16-6 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 15863741 checkY
  • 154735196
  • DTXSID701018815
  • InChI=1S/ArFH/c1-2/h1H checkY
    Key: HEPJAPHKUAGBIG-UHFFFAOYSA-N checkY
  • InChI=1/ArFH/c1-2/h1H
    Key: HEPJAPHKUAGBIG-UHFFFAOYAL
  • F[ArH]
Properties
HArF
Molar mass 59.954 g/mol
Appearance Unknown
Density Unknown
Melting point −256 °C (−428.8 °F; 17.1 K) (decomposes)
Unknown
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

DiscoveryEdit

The discovery of this argon compound is credited to a group of Finnish scientists, led by Markku Räsänen.[1] On 24 August 2000, in the journal Nature, they announced their discovery of argon fluorohydride.[2] This discovery caused the recognition that argon could form weakly bound compounds, even though it was not the first.[3]

SynthesisEdit

This chemical was synthesized by mixing argon and hydrogen fluoride on a caesium iodide surface at 8 K (−265 °C), and exposing the mixture to ultraviolet radiation. This caused the gases to combine.

The infrared spectrum of the resulting gas mixture shows that it definitely contains chemical bonds, albeit very weak ones; thus, it is argon fluorohydride, and not a supermolecule or a mixture of argon and hydrogen fluoride. Its chemical bonds are stable only if the substance is kept at temperatures below 27 K (−246 °C); upon warming, it decomposes into argon and hydrogen fluoride.[2]

ReferencesEdit

  1. ^ Räsänen, Markku (17 December 2013). "Argon out of thin air". Nature Chemistry. 6 (1): 82. doi:10.1038/nchem.1825. PMID 24345939.
  2. ^ a b Khriachtchev, Leonid; Mika Pettersson; Nino Runeberg; Jan Lundell; Markku Räsänen (24 August 2000). "A stable argon compound". Nature. 406 (6798): 874–876. Bibcode:2000Natur.406..874K. doi:10.1038/35022551. PMID 10972285. S2CID 4382128.
  3. ^ ""HArF! Argon's not so noble after all – researchers make argon fluorohydride"".{{cite web}}: CS1 maint: url-status (link)

Further readingEdit

  • Emsley, John (2001). Nature's Building Blocks: An A–Z Guide to the Elements. Oxford: Oxford University Press. ISBN 0-19-850341-5.