Xenon hexafluoride reactions

Although uncontrolled reaction of xenon hexafluoride and moisture produces explosive xenon trioxide, controlled action by progressive addition of limited amounts of water vapour with agitation to a frozen solution of the hexafluoride in anhydrous hydrogen fluoride at —196° C to give xenon oxide tetrafluoride or xenon dioxide difluoride is safe [1], Controlled hydrolysis in solution in hydrogen fluoride is, however, described as hazardous [2],... 

The oxyfluoride, XeOF4 is a stable colorless liquid produced by the reaction of xenon hexafluoride with sodium nitrate ... 

Xenon hexafluoride reacts with water to produce xenon trioxide and hydrofluoric acid. Write the chemical equation for the reaction. 

Electrochemical fluorination of pyridine in the presence of a source of fluoride ion gave 2-fluoropyridine in 22% yield (85M11). With xenon difluoride, pyridine formed 2-fluoropyridine (35%), 3-fluoropyridine (20%), and 2,6-difluoropyridine (11%) in a reaction unlikely to be a conventional electrophilic substitution. Xenon hexafluoride has also been used (76JFC179). With cesium fluoroxysulfate at room temperature in ether or chloroform, the major product was 2-fluoropyridine (61 and 47%, respectively). Some 2-chloropyridine was also formed in chloroform solution. In methanol the entire product was 2-methoxypyridine (90TL775). Fluorine, diluted with argon in acetic acid, gave a 42% yield of the 5-fluoro derivative of l-methyl-2-pyridone [82H( 17)429],... 

On reaction with xenon hexafluoride (53) NOF forms the adduct 2NOF XeFs. Infrared and Raman measurements suggested the ionic formulation NOj2 TXeF8]2 for the solid, and later structural work... 

XeOp4 was first detected as an impurity by mass spectrometry among the xenon fluorides prepared by thermal methods. It was obtained in macroscopic quantities by the partial hydrolysis of xenon hexafluoride (equation 7). Umeacted XeFe and HF formed in the reaction are removed... 

THE XENON-PLATINUM HEXAFLUORIDE REACTION AND RELATED REACTIONS... 

Table 6. — Some results for the xenon -F platinum hexafluoride REACTION...

N. Bartlett and N. K. Jha, The Xenon-Platinum Hexafluoride Reaction and Related Reactions, Noble Gas Compounds, ed. H. H. Hyman, University of Chicago Press (1963) 23-30. 

Xenon hexafluoride may be prepared in essentially the same way as xenon tetrafluoride (synthesis 66), except for increasing the fluorine-to-xenon ratio and the final pressure at reaction temperature.Variations of temperature, pressure, mol ratio, and time make possible the formation of xenon difluoride, xenon tetrafluoride, or xenon hexafluoride. The conditions described below have been found to give good yields and purity for xenon hexafluoride. 

The xenon hexafluoride for this synthesis is best prepared by reaction of xenon with an excess of fluorine at 300° in a nickel or Monel apparatus. Extremely pure XeFs is not required. Xenon hexafluoride attacks glass, and should be stored in a nickel or Monel container until ready for use. The hydrolysis reaction is violent, and if more than a hundred milligrams of XeFe is to be hydrolyzed, special safety precautions must be taken. Face shields, heavy gloves, and a sturdy plastic explosion barrier between the hydrolysis apparatus and the experimenter are strongly recommended. No more than about 3 g. of XeFg should be hydrolyzed in one batch. 

How many moles of cesium xenon heptafluoride (CsXeF7) can be produced from the reaction of 12.5 mol cesium fluoride with 10.0 mol xenon hexafluoride ... 

Since Bartlett s discovery, many other noble gas compounds have been made. All involve very electronegative elements. Most are compounds of Xe, and the best characterized compounds are xenon fluorides. Oxygen compounds are also well known. Reaction of Xe with F2, an extremely strong oxidizing agent, in different stoichiometric ratios produces xenon difluoride, Xep2 xenon tetrafluoride, XeF and xenon hexafluoride, XeFg, all colorless crystals (Table 24-3). 

Noble gases are relatively unreactive, but they are not totally inert. The first compound containing a noble gas element was synthesized by Neil Bartlett in 1962. He made xenon hexafluoride using the following reaction. 

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