Table 2 shows the selectivity of silver picrate over the other metal picrate for the macrocyclic Schiff bases (II) and (III). The selectivity is indicated as DAg+/Dmn+. DAg+ and Dmn+ denotes the distribution ratio of Ag+ UNC1215 and Mn+ ion, respectively. The macrocyclic Schiff bases (II) and (III) indicated high selective extraction of Ag+ ion over the Cu2+ and Ni2+ ions with 9.9 and 14.4, respectively. The selectivity results for to dichloromethane are higher than those for chloroform (Fig. 1).
The selectivity of silver picrate over the effector other metal picrates for the macrocyclic Schiff bases (II) and (III).Metal ionSelectivityaDAg+/Dmn+SelectivitybDAg+/Dmn+(II)(III)(II)(III)Cu2+9.1 ± 0.29.9 ± 0.34.8 ± 0.32.3 ± 0.2Ni2+10.7 ± 0.114.4 ± 0.54.8 ± 0.32.4 ± 0.5aCalculated for dichloromethane as organic solvent phase.bCalculated for chloroform as organic solvent phase.Full-size tableTable optionsView in workspaceDownload as CSV