Synthesis, Characterization, and Electrochemical Study of Tetradentate Ruthenium-Schiff Base Complexes: Dioxygen Activation with a Cytochrome P450 Model Using 1- or 2-Methylimidazole as Axial Bases

Table 3

Cyclic voltammetry data of the Ru(III)-complexes under nitrogen and oxygen atmosphere.

Electrochemical characteristics of the Ru(III)-complexes
Complex	Under nitrogen				Under oxygen
	𝐸pc (V)	𝐸pa (V)	𝐸1/2 (V)^a	𝐼pa/𝐼pc	𝐸pc1 (V)	𝐸pc2 (V)	𝐼pc (μA)^b	𝐼pc(O2)/𝐼pc(N2)
1	0.660	0.585	0.622	0.80	0.580	0.720	09.60	1.60
2	0.600	0.530	0.565	0.80	0.520	0.700	14.40	2.57
3	0.540	0.475	0.507	0.86	0.500	0.620	14.80	1.76

^a𝐸_1/2=(𝐸_pa−𝐸_pc)/2; values obtained under nitrogen.
^b𝐼_pc=(𝐼_pc1+𝐼_pc2); values between brackets are obtained under oxygen.