Unusual stoichiometry of urea-derivatized calix[4]arenes induced by anion complexation

0025786 - ÚACH 2006 RIV GB eng J - Článek v odborném periodiku
Lang, Kamil - Cuřínová, P. - Dudič, M. - Prošková, P. - Stibor, I. - Šťastný, V. - Lhoták, P.
Unusual stoichiometry of urea-derivatized calix[4]arenes induced by anion complexation.
[Neobvyklá stechiometrie kalixaren - močoviny indikované komplexací aniontů.]
Tetrahedron Letters. Roč. 46, č. 26 (2005), s. 4469-4472. ISSN 0040-4039. E-ISSN 1873-3581
Grant CEP: GA ČR(CZ) GA203/03/0926
Klíčová slova: calixarene * anion complexation * dimerization
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 2.477, rok: 2005

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.

Kalixareny se dvěma p-nitrofenylmočovinovými funkcemi na horním okraji efektivně vážou anionty.
Trvalý link: http://hdl.handle.net/11104/0116137