Xenon oxide fluorides

Xenon fluorides, 77 323-325 binary, 77 335-336 Xenon-gold cations, 77 332 Xenon halides, 77 323-325 Xenon hexafluoride, 7 7 325, 329 uses for, 7 7 336 Xenon ion lasers, 74 685 Xenon isotopes, in fission reactors, 77 375 Xenon oxide difiuoride, 77 326 Xenon oxide fluorides, 7 7 326 Xenon oxides, 77 325-326 Xenon oxide tetrafluoride, 77 326 Xenon testing, in plastics weathering, 79 584-585... 

The xenon fluorides are used to prepare the xenon oxides and oxoacids and, in a series of disproportionations, to bring the oxidation number of xenon up to +8. First, xenon tetrafluoride is hydrolyzed to xenon trioxide, Xe03 in a disproportionation reaction ... 

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],... 

Russian scientists (Avrorin et al., 1981, 1985) have reported that reactions of complex mixtures of radon, xenon, metal fluorides, bromine pentafluoride, and fluorine yield a higher fluoride of radon which hydrolyzes to form RnO. However, efforts to confirm these findings have been unsuccessful. In similar experiments which have been carried out at Argonne National Laboratory (Stein, 1984), it has been found that radon in the hydrolysate is merely trapped in undissolved solids centrifugation removes the radon from the liquid phase completely. This is in marked contrast to the behavior of a solution of XeO, which can be filtered or centrifuged without loss of the xenon compound. Hence there is no reliable evidence at present for the existence of a higher oxidation state of radon or for radon compounds or ions in aqueous solutions. Earlier reports of the preparation of oxidized radon species in aqueous solutions (Haseltine and Moser, 1967 Haseltine, 1967) have also been shown to be erroneous (Flohr and Appelman, 1968 Gusev and Kirin, 1971). 

Xenon is currently exciting to scientists because, contrary to earlier belief, it has now been learned that it is not completely inert. Under the right conditions, xenon can be made to react with fluorine. It makes several different fluoride compounds, and these in turn react with oxygen to make xenon oxides. Such compounds are not used for much as yet, but the very fact of their being possible has reminded chemists that no scientific ques-... 

Krypton difluoride, 4313 Potassium hexaoxoxenonate-xenon trioxide, 4674 Tetrafluoroammonium hexafluoroxenate, 4386 Xenon difluoride dioxide, 4322 Xenon difluoride oxide, 4319 Xenon difluoride, 4332 Xenon hexafluoride, 4377 Xenon tetrafluoride, 4353 Xenon tetrafluoride oxide, 4346 Xenon tetraoxide, 4863 Xenon trioxide, 4857 Xenon(II) fluoride methanesulfonate, 0443 Xenon(II) fluoride perchlorate, 3977 Xenon(II) fluoride trifluoroacetate, 0634 Xenon(II) fluoride trifluoromethanesulfonate, 0356 Xenon(IV) hydroxide, 4533 Xenon(II) pentafluoroorthoselenate, 4382 Xenon(II) pentafluoroorthotellurate, 4383 Xenon(II) perchlorate, 4110 See Other NON-METAL HALIDES, NON-METAL OXIDES... 

Hazards With Xenon Trioxide Solutions ( Xenic Add ) , Talanta 14, Pergamon Press, N Ireland (1967), 871-3 [Accdg to this worker all Xe compds must be treated as potential sources of the expl Xe trioxide. Also, Xe fluorides and oxide fluorides, if contaminated with organic materials, should also be treated as sensitive expls]... 

Xenon difluoride dioxide, 4316 Xenon difluoride oxide, 4313 Xenon difluoride, 4326 Xenon hexafluoride, 4371 Xenon(II) fluoride methanesulfonate, 0442 Xenon(II) fluoride perchlorate, 3971 Xenon(II) fluoride trifluoroacetate, 0630 Xenon(II) fluoride trifluoromethanesulfonate, 0355 Xenon(II) pentafluoroorthoselenate, 4376 Xenon(II) pentafluoroorthotellurate, 4377 Xenon(IV) hydroxide, 4528 Xenon tetrafluoride oxide, 4340 Xenon tetrafluoride, 4347 Xenon tetraoxide, 4857 Xenon trioxide, 4851 Xenon, 4920 t mixo-Xylene, 2964 t m-Xylene, 2966 t o-Xylene, 2965 t p-Xylene, 2967... 

Of all the noble gases only xenon has, so far, been shown to yield oxide fluorides. The best known of these, xenon oxide tetrafluoride, was first prepared in 1963. Xe02F2 and XeOF2 are also well characterized and the compounds, XeOjF and Xe02F4 have also been synthesized. The chemistry of these up to 1972-1973 has been authoritatively reviewed (317). 

Xenon oxides are prepared from the fluorides. As has already been mentioned, hydrolysis of XeF4 and XeF6 leads to the formation of Xe03 by reactions that can be shown as... 

R—NiF3 is able to oxidize xenon at 293 K in aHF to xenon(VI) fluoride which acts as a base in the disproportionation reaction mentioned in Eqn. (47). 

The previously known xenon(IV) oxide fluoride, XeOF2 has been generated in CH3CN solution by the reaction of H20 with XeF4 at —45°C to give a bright yellow solution which has been characterized by low-temperature l9F and l29Xe NMR spectroscopy [196]. 

The compounds obtained by the reaction of XeFe or xenon(VI) oxide fluorides with Lewis acids and bases are described here. 

Xenon tetrafluoride forms stable colorless crystals. Two other xenon fluorides, XeF2 and XeFs, were synthesized by the group at Argonne, and a highly explosive xenon oxide (XeOy) was also found. The xenon fluorides react with water to form hydrogen fluoride and oxycompounds. For example ... 

Electron Distribution in the Xenon Fluorides and Xenon Oxide Tetrafluoride by ESCA and Evidence for Orbital Independence in the Xenon-Fluorine Bonding... 

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