methanol; carbon dioxide; tetra-n-butylammonium tetrafluoroborate T=50°C; P=71255.7 Torr; electrolysis: stainless steel grid as cathode, platinum grid as anode, Ag quasi-reference electrode, -3.0 V, 2700 C; Yield given. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

T=30°C; Irradiation;

tetra-n-butylammonium tetrafluoroborate T=50°C; P=71255.7 Torr; electrolysis: stainless steel grid as cathode, platinum grid as anode, Ag quasi-reference electrode, -3.0 V, 2700 C; Yield given. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

bromine Further byproducts given;

1,2-Dibromo-1,2-dichloro-1,2-difluoroethane; C9F20 T=190°C; P=13680 Torr; Product distribution; Further Variations:ReagentsPressuresTemperatures;

lead(II) bromide; aluminium; tin(ll) chloride 3 h; Irradiation; Yields of byproduct given;