Research Article

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

Table 3

The stability constants and parameters of ternary (mixed NiAB) complexes at 25.0 ± 0.1°C, = 0.1 mol·L−1 KNO3. % RS is the percentage relative stabilization value, as explained in (12).

% R.S

Ni(II):Ade(A):L-Asp(B)17.01 ± 0.0610.358.872.210.9627.14
Ni(II):Ade(A):L-Glu(B)15.57 ± 0.068.9110.233.5740.9366.85
Ni(II):Ade(A):L-Asn(B)18.80 ± 0.0312.1410.784.120.8551.37
Ni(II):Ade(A):L-Leu(B)16.01 ± 0.059.3510.483.820.9069.07
Ni(II):Ade(A):L-Phe(B)15.43 ± 0.048.776.52−0.140.93−1.57
Ni(II):Ade(A):L-Tryp(B)16.06 ± 0.029.4010.613.951.0172.48

Uncertainties are expressed as ± one standard deviation.