Table 1.
Spectroscopic properties of the examined radical anions.
| acceptor/ donor |
A•− (main band) λmax (nm) |
ε (× 10−3) L mol−1 cm−1 |
A•− (further maxima) λmax (nm) |
ΦA•− |
| TCB/OXA | 462 | 10.3 | 436, 414, 375, 354 | 0.15 |
| TCB/TEA | 9.6 | 0.15 | ||
| TCB/iPr3N | 9.8 | 0.08 | ||
| TCB/Et2NHa | 6.7 | 0.15 | ||
| TCB/MAEa | 2.9 | 0.05 | ||
| TCB (literature)b,c | 462 | 4.9,b 14.6–15.4c |
– | – |
| 1,2,4-TrCN/OXA | 351 | 2.3 | 433, 397 | – |
| DCN/OXA | 389, 512 |
5.4, 1.0 |
621, 500, 481 | – |
| DCN (literature)d | 512 | 3.6d | – | – |
| DCA/OXA | 705, 640 |
0.6, 0.4 |
520 | – |
| DCA (literature)e | 640 | 5.6e | – | – |
| DCP/OXA | 577 | 25.6 | 536, 382 | – |
| DCP-Me/OXA | 578 | 26.3 | 537, 390 | – |
| ME/OXAa | 527 | 0.80 | 368 | – |
| PME/OXAa | 533 | 1.4 | 371 | – |
aAn irreversible reaction occurred. bMeasured by pulse radiolysis in 2-methyltetrahydrofuran, at 77 K; from [35]. cMeasured by laser flash photolysis at room temperature of a MeCN solution of 1,2,4-trimethylbenzene or o-xylene as donors, see [24]. dMeasured by laser flash photolysis at room temperature of a DMF solution of alkyltriphenyl borate anions as donors; from [40]. eMeasured by electrolysis in DMF at room temperature; from [34].