We next investigated the capacity of Co Terpy-RF to function as a CO2R electrocatalyst in an acetonitrile solvent with tetrabutylammonium hexafluorophosphate supporting electrolyte. Under N2, Co Terpy-RF exhibited redox waves at 0.1 V and at -1.2 V vs. Fc + /Fc (Fig. and). From previous studies on analogous complexes, we assign the two waves to a Co(III/II) and a Co(II/I) redox couple, respectively. Upon adding CO2 to the system, we observed an irreversible catalytic current more negative than the Co(II/I) wave, indicating that Co Terpy-RF in the Co(I) state is active towards CO2R. After potentiostatic electrolysis, we measured CO as the primary product (see Fig. -12 for product analysis), albeit produced with only a modest 8.4% FE.