Calixarenes as Polyhapto-aromatic Ligands: Alkali Metal Ions and Sulfonated Calixarenes

Crystal structure determinations for the hexarubidium and octacesium derivatives of calix[6]arene hexasulfonic acid, as well as of a new solvate of the pentasodium derivative of calix[4]arene tetrasulfonic acid, and comparison with structural data from the literature for alkali metal complexes of su...

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Bibliographic Details
Published in:Supramolecular chemistry 2003-01, Vol.15 (1), p.69-77
Main Authors: Asfari, Zouhair, Harrowfield, Jack, Thuéry, Pierre, Vicens, Jacques
Format: Article
Language:English
Subjects:
Alkali Metals
Calixarene Sulfonates
Crystal Structures
π-Donation
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Summary:Crystal structure determinations for the hexarubidium and octacesium derivatives of calix[6]arene hexasulfonic acid, as well as of a new solvate of the pentasodium derivative of calix[4]arene tetrasulfonic acid, and comparison with structural data from the literature for alkali metal complexes of sulfonated calixarenes, have provided further evidence for the importance of interactions with aromatic ~ -electrons for the heavier alkali metal cations. There is evidence as well that this interaction can be enhanced by extended ionization of the sulfonated calixarene.
ISSN:1061-0278
1029-0478
DOI:10.1080/1061027031000073216