SYNTHESIS AND IONOPHORE PROPERTIES OF A SERIES OF NEW TETRAPYRAZOLIC MACROCYCLES

Article abstract of DOI:10.1016/S0040-4020(01)85096-1

The synthesis of the several macrocycles containing two bipyrazolic subunits, with different cavity sizes and with donorgroup-bearing side arms attached, is reported.Their alkali cation binding ability has been studied from two aspects : extraction and transport through an artificial liquide membrane.Macrocycles described here show a high selectivity towars Li(1+) and Na(1+) cations; furthermore one of them is remarkably well adapted to extract selectively and to transport efficiently the lithium cation in competitive conditions.