Expanding Coefficient: A Parameter to Assess the Stability of Induced-Fit Complexes
Here we propose a new parameter, the Expanding Coefficient (EC), that can be correlated with the thermodynamic stability of supramolecular complexes governed by weak secondary interactions and obeying the induced-fit model. The EC values show a good linear relationship with the log Kapp of the respective pseudorotaxane complexes investigated. According to Cram's Principle of Preorganization, the EC can be considered an approximate mechanical measure of the host's reorganization energy cost upon adopting the final bound geometry.
Endo-Cavity complexation and through-the-annulus threading of large calixarenes induced by very loose alkylammonium ion pairs
Figure presented A general mode to obtain endo-complexation and through-the-annulus threading of scarcely efficient macrocyclic hosts was obtained by exploiting the inducing effect of the weakly coordinating tetrakis[3,5-bis(trifluoromethyl)phenyl]borate
Gaeta, Carmine,Troisi, Francesco,Neri, Placido
supporting information; experimental part
p. 2092 - 2095
(2010/06/20)
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