Extraction and solution thermodynamics of complexation of alkali and alkaline-earth cations by calix[4]arene amides

Autor:	Debbie J. Marrs, Geraldine Barrett, Serge Wechsler, Marie-José Schwing-Weill, Françoise Arnaud-Neu, William McGregor, Victor Vetrogon, M. Anthony McKervey, Stefano Fanni
Rok vydání:	1995
Předmět:	Strontium chemistry.chemical_compound Alkaline earth metal Chemistry Propargyl Inorganic chemistry Calixarene chemistry.chemical_element Methanol Solvent effects Acetonitrile Alkali metal
Zdroj:	Journal of the Chemical Society, Perkin Transactions 2. :453
ISSN:	1364-5471 0300-9580
DOI:	10.1039/p29950000453
Popis:	The extracting properties of nine new calix[4]arene tetraamides towards the entire alkali cation series and strontium have been determined. One of the amides bearing propargyl (prop-2-ynyl) residues on the nitrogen atoms has also been tested in Complexation in methanol for the same cations. The enthalpies and entropies of Complexation of alkali and alkaline-earth cations by the diethyl and pyrrolidinyl tetraamides in methanol and of alkali cations by the diethyl tetraamide in acetonitrile have been determined for the first time from calorimetric measurements. The data are compared with data for calixarene esters and solvent effects are discussed in the light of earlier results.
Databáze:	OpenAIRE
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