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The Supramolecular Chemistry Chemistry of Non-covalent Interactions: Host-guest Complexes - page 21 / 39

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NMR Titration

 NaI in water was added to the host (X= CF3SO3-)  

 Anion to host ratio of 20:1

 The chemical shift related to methylene  of the calix shifts down field (higher ppm)

 EQNMR software was used to find and model association constant.

 K1 = 51 M-1 for Iodide

 The same experiment was done for Chloride, Bromide, Nitrate, Acetate, Hydrogen phosphate and sulfate

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