Photolysis of liquid flourine and noble gases at - 196 °C

Abstract

The photolysis of fluorine/noble gas mixtures at -196 °C is described. U.V. photolysis for 13 hours gives 28% yield of KrF2 whilst photolysis with an argon laser gives comparable yields only 30 minutes.A 1:1:2 mixture of fluorine, krypton and MF5 (M = As, Sb), photolysed at -196°C using both U.V. and Argon laser radiation, gives KrF2. There is no evidence for reaction with MF5 at this temperature.Careful warming affords Kr2F3+SbF6-, α- and β-KrF+Sb2F11-, α-KrF+HsF6 and KrF+As2F11- at various temperature which have been characterised by Raman spectroscopy.