Table 2.
Redox potentials of heptalenes 6a, 6b, and 7.
| Sample | Method | E1OX [V] | E1RED [V] | E2RED [V] |
|---|---|---|---|---|
| 6a | CV | + 0.90 (Epa) |
− 1.84 (Epc) − 1.23 (Epa) |
– |
| (DPV) | (+ 0.76) | (− 1.77) | – | |
| 6b | CV | + 0.81 (Epa) |
− 1.87 (Epc) − 1.25 (Epa) |
– |
| (DPV) | (+ 0.72) | (+ 1.80) | – | |
| 7 | CV | + 0.81 (Epa) |
− 1.85 (Epc) − 1.31 (Epa) |
− 2.03 (Epc) − 1.73 (Epa) |
| (DPV) | (+ 0.74) | (− 1.76) | (− 1.94) |
V versus Ag/AgNO3, 1 mM in benzonitrile containing Et4NClO4 (0.1 M), Pt electrode (internal diameter: 1.6 mm), scan rate = 100 mVs−1 (CV) and 20 mVs−1 (DPV), and external standard Fc/Fc+ = + 0.15 V. Epc and Epa correspond to the cathodic and anodic peak potentials, respectively.