Table 1.

Half-wave Potentials (V vs SCE) of Isocorroles and Related Corroles in CH₂Cl₂, 0.1 M TBAP.

Macrocycles	Central metal	Oxidation			Reduction
		ΔE2-1	2nd	1st	1st	2nd	ΔE1-2
TT-10-isoCor	2H	0.34	1.16	0.82	−1.00	−1.30a	0.30
	NiII	0.43	1.14	0.71	−0.92a	−1.26a	0.34
	CuII	0.33	1.04	0.71	−0.92a	−1.40a	0.48
TT-5-isoCor	2H	0.70	1.58a	0.88a	−0.84	−1.08a	0.24
	NiII	0.45	1.14	0.69	−0.69	−1.10a	0.41
TTCor	NiIII	---	1.57a	0.87c, 0.61	0.02	---	---
	CuIII,b	0.65	1.35	0.70	−0.23	---	---

^aIrreversible peak potential at a scan rate of 0.10 V/s.

^bData taken from ref 34.

^cSplit peaks due to dimerization.