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Neobvyklá stechiometrie kalixaren-močovinových derivátů
Dudič, M. ; Lang, Kamil
Calix[4]arenes bearing two p-nitrophenyl-ureido functions at the upper rim are effective anion binders. The stoichiometry of complexation depends on the substitution pattern (distal vs proximal) and anion concentration. While the distally substituted receptor forms 1:1 complexes with anions, the corresponding proximal derivative prefers the 2:1 stoichiometry (calixarene: anion) under identical conditions.

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