in neat (no solvent) byproducts: CF4; introduction of F2 (from electrolysis/graphite anode); abs. exclusion of air (N2 atm.); detailed description of apparatus and handling given;; condensed (liquid air); storage over aq. KOH (for weeks); repeated fractionating (and drying); passing over liquid mixture of metallic Na/K (removal of SO2F2;;
in further solvent(s) byproducts: (FCN)3; reactn. of a soln. of dirhodane in FCl2C-CClF2 with diluted F2 (F2:N2 0 1:10); cooled down to -183°C; solvent removed by condensation; mixt. condensed to aq. KOH-soln. at room temp. to remove SF4, SOF and (FCN)3; sepn. by fractionated condensation at -127°C, -140°C, -196°C;
