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

الموضوعات : Journal of Physical & Theoretical Chemistry

K. Zare ¹ , N. Osouleddini ²

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تاريخ الإرسال : 20 السبت , رجب, 1436 تاريخ التأكيد : 20 السبت , رجب, 1436 تاريخ الإصدار : 06 الجمعة , جمادى الأولى, 1430

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

ملخص المقالة :

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.