Abstract
The complex formation between sodium tetraphenylborate and Octaethyl-p-tert-Butylcalix[8]arene Octaacetate has been studied in a 1:1 binary mixture of deuterated chloroform and deuterated acetonitrile by 23Na NMR spectroscopy. The formation of complexes with 2:1 and 3:1 calix[8]arene/Na+ stoichiometries is reported. The dissociation equilibrium constant is 9.3*10−8M2 for the 2:1 complex. It is 3.2*10−3M for the dissociation of the 3:1 complex to form the 2:1 complex.
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