EFFECT OF A CATECHOL SEGMENT IN A POLYETHER CHAIN ON THE COMPLEXING ABILITY OF SOME PHOSPHONATE AND QUINOLINE MONOPODANDS

Article abstract of DOI:10.1007/BF01168097

The complexing ability of monopodands with o-diethoxyphosphinylmethoxyphenyl and 8-quinoline end groups, containing both ethylene glycol and catechol units in the polyether chain, was studied by conductimetry in tetrahydrofuran-CHCl3.Replacement of ethylene glycol by catechol changes the efficiency insignificantly, but in a number of cases leads to some increase in K/Li and K/Na selectivity of phosphonate podands, and the K/Li and Na/Li selectivity of quinoline podands.