Research Article

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 6

Electrochemical characteristics giving the electrocatalytic currents 𝐼 p c ( O 2 ) / 𝐼 p c ( N 2 ) .

Complex 𝑣 (mV s−1) 𝐸 p c 1 (mV/SCE) 𝐼 p c ( O 𝟐 ) (μA) 𝐼 p c ( N 2 ) (μA) 𝐼 p c ( O 2 ) / 𝐼 p c ( N 2 )

Electrochemical characteristics of the Ru(III)-complexes

With 1-methylimidazole

210680080.00a03.5022.85
100710086.00a12.0007.16
310600060.00a06.0010.00
100660067.00a16.0004.20

With 2-methylimidazole

210680140.0003.8036.84
100710136.0012.8010.62
310600075.0006.4011.72
100660073.0018.7004.00

a 𝐼 p c = ( 𝐼 p c 1 + 𝐼 p c 2 ) .