Table 7. Cathodic Peak Potential (Epc), Anodic Peak Potential (Epa), and Half-wave Potential (E1/2) for Copper Complexes of DO4S, DO3S, and DO2A2S in Aqueous Solution at pH 7, I = 0.15 mol/L NaNO3, and T = 25 °C.
complex | Epc [V] vs SCEa | Epa [V] vs SCEa | ΔEp [V] vs SCEa | E1/2 [V] vs SCEa |
---|---|---|---|---|
Cu-DO4S | –0.182 ± 0.001 | –0.115 ± 0.003 | 0.067 | –0.149 ± 0.001 |
Cu-DO3S | –0.334 ± 0.004 | –0.252 ± 0.003 | 0.082 | –0.293 ± 0.005 |
Cu-DO2A2S | –0.496b | –0.341b | 0.155b | –0.421 ± 0.004 |
Average of the values measured at 0.01 V/s ≤ v ≤ 0.2 V/s.
Value at v = 0.01 V/s.