HF byproducts: O2; Condensing of starting materials (molar ratio KrF2:CeO2 = 3:1 or 2:1) with anhyd. HF and keeping at room temp. for 24 h. React. is followed from change in colour of suspn. and total pressure of liberated gases.; Sepn. of resulting fluoride from HF by decantation, detn. of F and Ce after keeping (30°C, 1 h) in vac. X-ray diffraction, elem. anal., thermal anal. Well crystd. CeF4 is obtained by keeping the product underreact. conditions, for about 4 d.;

byproducts: XeOF4, F2, Kr; XeF6 is condensed into a FEP reaction vessel (fitted out with Teflon valves) containing Nd2O3, HF is added, the vessel is cooled in liquid N2, KrF2 is added, the vessel is held at room temp. for 6 d; the volatiles are pumped out;

polyethylene observed by IR and raman spectroscopy of KrF2;;

in neat (no solvent)

polyethylene observed by IR and raman spectroscopy of KrF2;;

polyethylene observed by IR and raman spectroscopy of KrF2;;

in further solvent(s) BrF5 solvent, -55°C, pptn.;