Table 2. Redox Potentials (V vs Fc0/+, Experimental and DFT-Calculated) and Associated Eletrochemical Data (Recorded at 0.1 Vs–1) for FeNi, FePd, and FePt Complexes (1 mM) in NBu4PF6 Electrolyte (100 mM CH2Cl2 Solution).
E1/2 (FeIMII/FeIIMII) (|ipc/ipa|, |ΔEp|) | E° (FeIMII/FeIIMII) DFT | E1/2 (FeIMI/FeIMII) (|ipa/ipc|, |ΔEp|)a | E° (FeIMI/FeIMII) DFT | |
---|---|---|---|---|
1 | +0.34b | +0.52 | –0.59 (0.90, 0.059) | –0.62 |
[1′]BF4 | –0.14 (0.68, 0.076)b | –0.14d | –0.92 (1.00, 0.072)c | –0.92d |
2 | +0.26 (0.29, 0.115) | +0.39 | –0.87 (0.98, 0.061) | –0.92 |
[2′]BF4 | –0.20 (0.67, 0.080) | –0.20e | –1.14 (0.83, 0.122) | –1.14e |
3 | +0.33 (0.49, 0.168) | NDf | –0.93 (0.97, 0.105)g | –0.91g |
[3′]BF4 | –0.19 (0.50, 0.076) | –0.24 | –1.37 (0.66, 0.067)g | –1.38 |
ΔEp(Fc0/+) = 0.064 V under these conditions.
Anodic potential for irreversible oxidation.
Data from ref (15).
Calculated and experimental values for [1′]BF4 agree by construction and were used as references for the corresponding [1] waves.
Calculated and experimental values for [2′]BF4 agree by construction and were used as references for the corresponding [2], [3], and [3′] waves.
This value was not determined as difficulties arising from local minima led to inconclusive results.
This wave is assigned to a Fe0PtII/FeIPtII couple (vide infra).