Table 5. Estimated excited-state redox potentials (V vs. SCE) for (cat)Ni(bpy^tBu₂) (1), (ap)Ni(bpy^tBu₂) (2), and (ap^Ph)Ni(bpy^tBu₂) (3).

(donor)Ni(bpytBu2)	E +/*/V vs. SCE	E*/–/V vs. SCE
(cat)Ni(bpytBu2) (1)	–1.42	+0.07
(ap)Ni(bpytBu2) (2)	–1.29	–0.47
(apPh)Ni(bpytBu2) (3)	–1.29	–0.54