Table 1.

Half‐wave potentials E _1/2 of Cu^II complexes vs. FcH/FcH⁺ in a 0.1 m KCl solution (water/acetonitrile=9:1) at room temperature.

Complex	E 1/2 [V]	Complex	E 1/2 [V]
[Cu(phen)2]2+	−0.32	[Cu(CF3phen)2]2+	−0.21
[Cu(Fphen)2]2+	−0.23	[Cu(SCF3phen)2]2+	−0.16
[Cu(F2phen)2]2+	−0.11	[Cu(SF5phen)2]2+	−0.14