Table 8. Energies of Reactions (ΔE, in kcal mol^–1), Gibbs Free Energies of Reaction (ΔG, in kcal mol^–1), Reorganization Energies (λ, in kcal mol^–1), Activation Energies (ΔG^≠, in kcal mol^–1), and Rate Constants (k, M^–1 s^–1), for the Reactions of the Complexes with the O₂^•– and Asc^– in Water at pH = 7.4.

				O2•–					Asc–
Species	Forma	Site	ΔE		ΔG	λ	ΔG≠	k	ΔE	ΔG	λ	ΔG≠	k
Cu2+(H2O)4				8.9	–21.1	39.7	2.2	3.72 × 109	18.0	–6.3	31.7	5.1	8.28 × 108
His–	mono	uni	C11	6.4	–25.4	41.0	1.5	1.40 × 109	15.5	26.1	32.3	3.6	1.52 × 109
			C12	6.6	–25.5	41.3	1.5	1.39 × 109	15.7	–10.7	32.6	3.7	1.50 × 109
		bi	C11C12	2.7	–31.2	43.2	0.8	1.42 × 109	11.8	–16.5	34.6	2.4	1.73 × 109
	bis		C11C12	–3.2	–28.6	34.5	0.3	1.33 × 109	5.9	–13.8	25.6	1.4	1.60 × 109
His2–	bis		C11C12	21.3	–10.0	40.3	5.7	3.04 × 108	30.4	4.8	31.4	10.4	1.39 × 105

^aThe nomenclature follows standard coordination chemistry conventions.