Table 8.
Redox potentials V vs. SCE for selected RuII complexes with extended π-system measured in acetonitrile unless otherwise noted. In parenthesis is the number of exchanged electrons.
| Complex | Oxidation | Reduction |
|---|---|---|
| [Ru(bpy)2(TPPHZ)Ru(bpy)2]4+ a [124] | +1.34 (2) | −0.71−1.31 (2) −1.51 (2) −1.72 |
| [Os(bpy)2(TPPHZ)Os(bpy)2]4+ a [124] | +0.89 (2) | −0.70 −1.21 (2) −1.44 (2) |
| [Ru(bpy)2(TPPHZ)Os(bpy)2]4+ a [124] | + 0.89 +1.33 | −1.27 (2) −1.48 (2) −1.66 −2.06 |
| [Ru(phen)2(PHEHAT)Ru(bpy)2]4+ [157] | +1.34 +1.55 | −0.68 −1.07 |
| [Ru(TAP)2(PHEHAT)Ru(phen)2]4+ [145] | +1.50 +1.86 | −0.57 −0.79 |
| [Ru(phen)2(PHEHAT)Ru(TAP)2]4+ [145] | +1.39 +2.10 | −0.52 −0.76 |
| [Ru(phen)2(PHEHAT)Ru(phen)2]4+ [157] | +1.34 +1.55 | −0.68 −1.06 |
| [Ru(phen)2(TPAC)Ru(phen)2]4+ [145] | +1.31 (2) | −1.10 −1.32 (2) −1.57 (2) |
| [Ru(TAP)2(TPAC)Ru(TAP)2]4+ [145] | +1.76 (2) | −0.76 (2) −0.92 (2) −1.26 (1) |
| [Ru(phen)2(tatpp)Ru(phen)2]4+ [161] | +1.32 (2) | −0.26 −0.75 −1.32 (2) |
| [Os(phen)2(tatpp)Os(phen)2]4+ [161] | +0.85 (2) | −0.07 −0.24 −1.27 (2) |
a Reduction potentials measured in DMF.