JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY, vol.55, pp.87-91, 2006 (SCI-Expanded)
The selective liquid-liquid extraction of various transition metal cations from the aqueous phase to the organic phase was carried out using a 14-membered N2O2S2-macrobicycle. Metal picrates such as Pb2+, Co2+, Zn2+, Ni2+,Cu2+ and Cd2+ were used in this extraction studies. It was found that the ligand showed moderate selectivity towards Pb2+ only among the other metals. The extraction constant (log K-ex) was determined to be 13.8 for Pb2+ complex.