Cyclic voltammetric data for [Cu(P^P)(N^N)][PF₆] complexes referenced to internal Fc/Fc⁺ = 0.0 V; CH₂Cl₂ (dry) solutions with [ⁿBu₄N][PF₆] as supporting electrolyte and scan rate of 0.1 V s⁻¹. Processes are quasi-reversible.

Complex cation	E 1/2/V	(Epc − Epa/mV)
[Cu(POP)(bpy)]+a	+0.72	110
[Cu(xantphos)(bpy)]+a	+0.76	110
[Cu(POP)(6-Mebpy)]+b	+0.69	125
[Cu(xantphos)(6-Mebpy)]+a	+0.85	100
[Cu(POP)(6,6′-Me2bpy)]+c	+0.92	183
[Cu(xantphos)(6,6′-Me2bpy)]+a	+0.89	145
[Cu(POP)(5,5′-Me2bpy)]+	+0.70	127
[Cu(xantphos)(5,5′-Me2bpy)]+	+0.75	131
[Cu(POP)(6-tBubpy)]+	+0.83	136
[Cu(xantphos)(6-tBubpy)]+	+0.87	99
[Cu(POP)(4,5,6-Me3bpy)]+	+0.77	114
[Cu(xantphos)(4,5,6-Me3bpy)]+	+0.82	122
[Cu(POP)(2-Etphen)]+	+0.80	92
[Cu(xantphos)(2-Etphen)]+	+0.86	91

^aData from ref. 21.

^bData from ref. 27.

^cData from ref. 58.