Pregledni rad

https://doi.org/10.5562/cca2170

An Enchiridion of Supramolecular Thermodynamics: Calix[N]arene (N=4,5,6) Tertiary Amide Derivatives and their Ionic Recognition

Angela F. Danil de Namor ; Laboratory of Thermochemistry, Department of Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
Tomas T. Matsufuji-Yasuda ; Laboratory of Thermochemistry, Department of Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
Katherine Zegarra-Fernandez ; Laboratory of Thermochemistry, Department of Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
Oliver A. Webb ; Laboratory of Thermochemistry, Department of Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
Abdelaziz El Gamouz ; Laboratory of Thermochemistry, Department of Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom

Sažetak

The importance of detailed thermodynamic studies in assessing the selective behaviour of
macrocyclic receptors for one species relative to another in a given solvent and the medium effect on
complexation processes involving ionic species are emphasised. Factors to be considered in the determination
of thermodynamic parameters of complexation in non-aqueous solvents are highlighted. Particular
reference is made to the need for considering the bulk of information available in the literature on the solution
properties of electrolytes in non-aqueous medium in the selection of the solvent for ion
complexation processes involving macrocycles.
A detailed thermodynamic study on the interaction of p-tert-butyl calix[n]arene (n = 4−6) tertiary amide
derivatives with uni- and bivalent cations in protic (methanol) and dipolar aprotic (acetonitrile) media is
reported. It is demonstrated that as the number of phenyl units in the macrocycle increases, the vital feature
of the cyclic tetramer receptor for selective recognition of cations decreases significantly for the cyclic
pentamer and almost disappears for the hexamer. Concluding remarks are included. (doi:
10.5562/cca2170)

Ključne riječi

thermodynamics; supramolecular chemistry; calix[n]arenes; cation complexation

Hrčak ID:

101901

URI

https://hrcak.srce.hr/101901

Datum izdavanja:

3.5.2013.

Posjeta: 2.890 *