Binding and Ionophoric Properties of Polythioamide Compounds. Ag(I) and Hg(II) Selectivities

Research paper by Khadija Raouf-Benchekroun, Claude Picard, Pierre Tisnés, Louis Cazaux

Indexed on: 01 Jul '99Published on: 01 Jul '99Published in: Journal of Inclusion Phenomena and Macrocyclic Chemistry


The synthesis of tetrathiolactams and related di- and tetrathioamide compounds is described. The formation constants of their heavy-metal complexes are determined by using the strong UV absorption of the thioamide chromophore. Extraction and transport abilities of tetrathioamide ionophores show selectivities for Ag(I) and Hg(II) cations over alkali, alkaline-earth or other heavy metal cations including transition metals such as Co(II).