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Table 2 Equilibrium constants \(K_{{{\text{O}}_{2} }}\) of dioxygen uptake in the Co(II)–l-α-amino acid–imidazole–O2 systems

From: Reversible uptake of molecular oxygen by heteroligand Co(II)–l-α-amino acid–imidazole systems: equilibrium models at full mass balance

Amac Co(II):amac:Himid (mmole ratio) Log \(K_{{{\text{O}}_{2} }}\)
Alanine 0.3:0.5:0.3 9.442
10.957
10.216
0.3:0.6:0.3 8.348
9.200
8.650
0.3:0.75:0.3 10.061
10.107
10.100
Mean: 9.7 ± 0.8
Asparagine 0.3:0.45:0.3 7.377
8.739
7.996
0.3:0.6:0.3 7.520
8.246
7.959
0.3:0.75:0.3 7.609
7.831
7.743
0.3:0.9:0.3 7.371
7.593
7.439
0.3:1.2:0.3 7.952
7.997
7.978
Mean: 7.8 ± 0.4
Histidine 0.3:0.15:0.3 15.050
15.422
15.425
0.3:0.375:0.3 14.002
14.175
14.179
0.3:0.45:0.3 15.585
15.712
15.714
0.3:0.6:0.3 14.537
14.471
14.475
Mean: 14.9 ± 0.7
  1. The mean values are followed by standard deviations