Electrochemical reduction of CF2Br2 alone is investigated in DMF. In the absence of an added olefin, the reduction occurs via an overall two-electron ECEC process that proceeds through the intermediary formation of CF2Br.-, CF2Br. and CF2Br- that yields ultimately the carbine: CF2 that reacts with DMF. Also it is possible to determinate the value of the number of electrons consumed directly with the combination of peak current in LSV and limiting current at a rotating disk electrode, we found n = 2, we considered the reduction of CF2Br2 is bielectronic corresponding to the formation of the methide CF2Br-.
