Table 2. Stability constants of copper(II) complexes with studied ligands (µ = 0.1, KCl).

Ligand

Complex species

logb

L3

[CuL3]

3.91

L2

[CuL2]

3.16

L1

[CuH2L1]

[CuHL1]- (2<a<3)

[CuHL1]- (3<a<4)

[CuL1]2-

3.18

6.82

5.02

8.51