methanol; carbon dioxide; tetra-n-butylammonium tetrafluoroborate T=50°C; P=71255.7 Torr; electrolysis: copper foil as cathode, platinum grid as anode, Ag quasi-reference electrode, -3.0 V, 2000 C; Yield given. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

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;

tetra-n-butylammonium tetrafluoroborate T=50°C; P=71255.7 Torr; electrolysis: copper foil as cathode, platinum grid as anode, Ag quasi-reference electrode, -3.0 V, 2000 C; Yield given. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

tetra-n-butylammonium tetrafluoroborate T=50°C; P=71255.7 Torr; electrolysis: copper foil as cathode, platinum grid as anode, Ag quasi-reference electrode, -3.0 V, 2000 C; Yield given. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

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;

hydrogen bromide Irradiation.mit UV-Licht;

Irradiation;

im UV-Licht.Irradiation;