Sodium Complexes of Two Polymeric Calix[4]arene Tetraesters

Abstract
In this study new Na+-complexes of polymeric calix[4]arenes which have more than one calix[4]arene tetraester units were prepared. The complexes have a metal to ligand ratio of 1:1, for each calix[4]arene tetraesters unit. The newly prepared compounds were characterised on the basis of their 1H NMR, IR, UV-visible spectra as well as elemental analyses.

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