Research Article

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

Table 2

The stability constants of binary complexes at 25.0 ± 0.1°C, = 0.1 mol·L−1 KNO3.


Ni(II):adenine(A)6.66 ± 0.0612.22 ± 0.06
7.88 [34]
6.66 [35] 11.11 [35]
Ni(II):L-Asp(B)8.14 ± 0.0612.70 ± 0.06
7.14 [36]12.43 [36]
7.25 [37]
Ni(II):L-Glu(B)5.34 ± 0.0310.36 ± 0.0313.43 ± 0.03
6.06 [38]10.33 [38]12.51 [38]
Ni(II):L-Asn(B)8.02 ± 0.0518.29 ± 0.0525.55 ± 0.04
8.64 [39]17.26 [39]25.64 [39]
Ni(II):L-Leu(B)5.53 ± 0.0411.78 ± 0.04
5.5575 [40]9.1013 [40]
Ni(II):L-Phe(B)6.52 ± 0.0210.10 ± 0.0216.58 ± 0.02
5.4034 [40]9.4963 [40]
Ni(II):L-Tryp(B)5.45 ± 0.029.64 ± 0.0213.62 ± 0.02
5.76 [41]10.98 [41]15.46 [41]

Uncertainties are expressed as ± one standard deviation.