Stability Constants of Mixed Ligand Complexes of Nickel(II) with Adenine and Some Amino Acids

Figure 4

Potentiometric titration curves of binary (1 : 1) and ternary (1 : 1 : 1) complexes ( = 0.1 mol·L⁻¹ KNO₃ at .1°C). Curve I: adenine alone, curve II: L-aspartic acid alone, curve III: Ni(II):adenine (1 : 1), curve IV: Ni(II):L-aspartic acid, and curve V: Ni(II):adenine:L-aspartic acid (1 : 1 : 1).