Kirin

Technical Eeport of Kirin, No. 32, Kirin Brewery Co. Ltd., Tokyo, 1989. 

Per Siegbahn (Stockholm, Sweden) Au-Chin Tang (Kirin, Changchun, China) Rudolf Zahradnik (Prague, Czech Republic)... 

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). 

Gusev, Yu. K. and Kirin, I. S., The Chemical State of 222Rn in the a-Decay of 226Ra in Certain Solutions and Crystals, Radiokhim. 13 916-918 (1971). 

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