Table 1.
Catalytic and kinetic data for complexes 1–5.
|
Catalyst |
TOF [s−1][a] |
Reaction order[b] |
TOF [s−1][c] |
E III/II [V vs. NHE][d] |
E IV/III [V vs. NHE][d] |
E V/IV [V vs. NHE][d] |
KIE[e] |
|---|---|---|---|---|---|---|---|
|
1 |
1.3 |
0.96 |
0.03 |
0.73 |
/ |
1.18 |
1.16 |
|
2 |
2.3 |
0.99 |
0.09 |
0.73 |
0.95 |
1.14 |
1.07 |
|
3 |
5.7 |
1.29 |
0.28 |
0.74 |
0.99 |
1.17 |
1.71 |
|
4 |
34.1 |
1.01 |
0.31 |
0.77 |
0.95 |
1.14 |
1.31 |
|
5 |
166.6 [21] |
2 [21] |
0.68 |
0.77 |
0.99 |
1.17 |
1.66 |
[a] TOF stands for turnover frequency, values for 1–4 extracted from CeIV‐driven water oxidation activities at pH 1, [cat]=0.16 mM; [b] values of reaction order in catalysts for 1–4 extracted from CeIV‐driven water oxidation activities at pH 1. [c] TOF values extracted from CV according to equation 1; [d] potential measured in 0.1 M NaH2PO4 aqueous solution with 30 % CF3CH2OH; [e] KIE stands for kinetic isotope effect, values obtained electrochemically in 0.1 M NaH2PO4 aqueous solution with 30 % CF3CH2OH.