Table 5. Cyclic voltammetry data for the complexes.

	[Co(L)(H2O)](ClO4)2	[Ni(HL)](ClO4)2	[Cu(HL)](ClO4)2
E pc (V) vs. Ag/AgCl	-0.641	0.812	- 0.032 (I)
			-0.198 − -0.450 (II)
E pa (V) vs. Ag/AgCl	0.837	0.920	0.049 (I`)
			0.103 (II´)
E 1/2 (V) vs. Ag/AgCl	-	0.866	0.009 (I and I´)
E 1/2 (V) vs. NHE	-0.432ª	1.08	0.218 (I and I´)
	1.05 b
ΔE(V)	-	0.109	0.081
ΔE(V) internal standard	0.347	0.347	0.347

^a: E _pc is given instead of E _1/2

^b: E _pa is given instead of E _1/2.