The relevant electrochemical and electrocatalytic data for 1 and 2 in N₂ atmosphere.

Complex	Atmosphere	E pc a (V)	i p (μA)	i cat b (μA)	i cat/ip
1	N2	2.02	38.62	52.38	1.35
2	N2	1.98	73.16	125.86	1.72

^aAll data for 1 and 2 (1 mM) are versus Ag/AgNO₃ in 0.1 M n-Bu₄NPF₆/MeCN at a scan rate of 0.2 V s⁻¹.

^b i _cat is the catalytic current at the highest concentration of H₂O (50 μL).