The pH effect on complexation of Alkali metal cation by p-sulfonatocalix (4) arene in aqueous solution

Subject Areas : Journal of Physical & Theoretical Chemistry

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Received: 2015-05-09 Accepted : 2015-05-09 Published : 2009-05-01

Keywords: Formation constant, spectrophotometeric titration, alkali metal cation, p-sulfonatocalix(4)arene,

Abstract :

The complexation of Alkali metal cations by the water-soluble p-sulfonic acid calix(4)arenewas thermodynamically characterized using spectrophotometeric data which are consistentwith the formation of a 1:1 complex resulting from electrostatic interactions between thesulfonato groups and alkali metal cations. In this study, we determined the formationconstants (log K) of the complexes and have compared in deferent pH (1.0 and 1.5) at 25°C.

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The pH effect on complexation of Alkali metal cation by p-sulfonatocalix (4) arene in aqueous solution