Table 3. Peak Potential Values (volts, vs Ag/AgCl, KCl saturated) for the Redox Changes Exhibited by Clusters 16–, 35–, and 26– in a CH3CN/[NBu4][PF6] Solutiona.
| redox
steps |
|||||||
|---|---|---|---|---|---|---|---|
| complex | 4– to 5–b | 5– to 6–b | 6– to 7–b | 7– to 8–b | 8– to 9–b | 9– to 10–b | 10– to 11–b |
| 16– | –0.46c | –0.76c | –1.05c | –1.54c | –1.79 | ||
| 35– | –0.19c | –0.52c | –0.89c | –1.22c | –1.56 | –1.91 | |
| 26– | –0.57c | –0.75c | –1.08c | –1.26c | –1.61 | –1.87 | |
a
Data from differential pulse voltammetry at 0.02 V s–1.
b
One-electron process, as inferred from IR SEC.
c
Chemically reversible processes on the time scale of IR SEC.