Xenon fluorosulfate

The moderate thermal stability of the xenon fluorosulfates suggested that trifluoromethyl sulfates and even the methyl sulfates might be preparable. Although reactions to produce these compounds did proceed, under control, at temperatures of —20° or lower, the solid products usually detonated at or below room temperatures. The interaction of XeFa with a slight molar excess of HOSO2CF3 in HF has yielded a solid product which is indicated by vibrational spectroscopic evidence to be CFsSOaXeF. 

Derivatives. The nonmetaHic inorganic derivatives of fluorosulfuric acid are generally made indirectly, although complex fluorosulfates of the Group 15 (V) elements and of xenon can be made directly (85,86), as can the NO" and NO" 2 salts (26,27). 

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). 

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

The bis(fluorosulfate) dissolves in both IF5 and BrFj. These solutions decompose very slowly at room temperature, and even at 40 the xenon evolution is at a much lower rate than in the... 

The Crystal Structure of Xenon(II) Fluoride Fluorosulfate, FXeOSOaF... 

Xenon(II) fluoride fluorosulfate was prepared by treating Xep2 with the correct molar quantity of fluorosulfonic acid at — 75 ,n the hydrogen fluoride, formed in the reaction, being removed under vacuum at temperatures below —30 . Material, powdered at —10 , was sealed in thin-walled quartz capillaries. Crystals were grown by sublimation at room temperature. 

The molecule of FXeOSOjF consists of a xenon atom approximately linearly coordinated to a fluorine atom on one side and an approximately tetrahedral fluorosulfate group on the other. The fluorosulfate group is coordinated to the Xe atom by way of an oxygen atom. The bond distances and angles are given in Table III. 

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