Xenon perchlorate

Xenon Perchlorate (Xenon (II) bis perchlorate), Xe(C104)2 mw 330.01 pale yel solid decompg to a red liq mp, detonates when heated over 20°. Sol in acetonitrile. Prepn is by treating Xe difluoride with 2 moles of anhydr perchloric add initially at —110°, and completing the reaction at -60°... 

During preparation from perchloric acid and xenon difluoride at —50°C, violent explosions occurred if the reaction mixture was allowed to warm up rapidly [1]. Detonates easily and should be handled with extreme care [2],... 

Since the discovery of the first noble gas compound, Xe PtF (Bartlett, 1962), a number of compounds of krypton, xenon, and radon have been prepared. Xenon has been shown to have a very rich chemistry, encompassing simple fluorides, XeF2> XeF, and XeF oxides, XeO and XeO oxyf luorides, XeOF2> XeOF, and Xe02 2 perxenates perchlorates fluorosulfates and many adducts with Lewis acids and bases (Bartlett and Sladky, 1973). Krypton compounds are less stable than xenon compounds, hence only about a dozen have been prepared KrF and derivatives of KrF2> such as KrF+SbF, KrF+VF, and KrF+Ta2F11. The chemistry of radon has been studied by radioactive tracer methods, since there are no stable isotopes of this element, and it has been deduced that radon also forms a difluoride and several complex salts. In this paper, some of the methods of preparation and properties of radon compounds are described. For further information concerning the chemistry, the reader is referred to a recent review (Stein, 1983). 

Tetrafluoroammonium hexafluoromanganate, 4384 Tetrafluoroammonium hexafluoronickelate, 4385 Tetrafluoroammonium hexafluoroxenate Tetranitromethane, 0546 Titanium tetraperchlorate, 4170 1,1,1 -Triacetoxy-1,2-benziodoxol-3-one, 3610 Trifluoromethyl hypofluorite, 0353 Trimethylsilyl chlorochromate, 1301 Trioxygen difluoride , 4323 Uranium hexafluoride, 4375 Vanadium(V) oxide, 4866 Vanadium trinitrate oxide, 4763 Vanadyl perchlorate, 4152 Xenon hexafluoride, 4377 Xenon(II) pentafluoroorthoselenate, 4382 Xenon(II) pentafluoroorthotellurate, 4383 Xenon tetrafluoride, 4353 Xenon tetrafluoride oxide, 4346 Xenon tetraoxide, 4863 Xenon trioxide, 4857 Zinc permanganate, 4710... 

The discovery happened by accident. Lewis and Anders were frustrated by their failure to find the carrier of anomalous xenon in carbonaceous chondrites. They decided to try an extreme treatment to see if they could dissolve the carrier. They treated a sample of the colloidal fraction of an Allende residue with the harshest chemical oxidant known, hot perchloric acid. The black residue turned white, and to their surprise, when they measured it, the anomalous xenon was still there The residue consisted entirely of carbon, and when they performed electron diffraction measurements on it, they found that it consisted of tiny (nanometer sized) diamonds. After a detailed characterization that included chemical, structural, and isotopic studies, they reported the discovery of presolar diamond in early 1987 (Lewis et al., 1987). The 23-year search for the carrier of CCFXe (Xe-HL) was over, and the study of presolar grains had begun. 

Xenon Fluoro Perchlorate. (Xenon (II) fluoride perchlorate). FXea04 mw 249.75 colorl solid, red liq mp 16.5° (decompn) bp, detonates when heated rapidly above 20°. Sol in acetonitrile, Prepn is by reacting Xe difluoride with perchloric acid initially at —110°, then to reaction completion at —60°... 

Thermodynamically unstable, it explodes readily and sometimes with violence. See other NON-METAL PERCHLORATES, XENON COMPOUNDS... 

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... 

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(II) perchlorate, 4104 Xenon(IV) hydroxide, 4528... 

Beside XeOs and Xe04, some xenon oxyfluorides are also thermally unstable compounds. They may detonate, particularly at higher temperatures. Other derivatives of the xenon and krypton fluorides involving ligands less electronegative than fluorine should also be assmned to be of low thermodynamic stability. Many derivatives such as perchlorates and trifluoroacetates are known to be explosive. 

Fluorosulfates and Perchlorates of Xenon(ll) and the Salt KFXe0)2S(0)F]+[AsF6] ... 

Xenon(Il) Fluoride Perchlorate. Preparation.—Perchloric acid (0.294 g, 2.93 mmol) was condensed into a Kel-F reactor containing XeF2 (0.477 g, 2.82 mmol) and was allowed to warm first to —110° and after 10 min to —60°. The reaction was... 

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