TY - JOUR
T1 - Thermodynamic and electrochemical aspects of the interactions of functionalised calix(4)arenes and metal cations in ‘allosteric media'
AU - de Namor, Angela F.Danil
AU - Cabaleiro, Mercedes C.
AU - Vuano, Bruno M.
AU - Salomon, Mark
AU - Pieroni, Olga I.
AU - Tanaka, David A.Pacheco
AU - Ng, Cho Y.
AU - Tanco, Margot A.Llosa
AU - Rodríguez, Nora M.
AU - García, Jaime D.Cárdenas
AU - Casal, Alberto R.
N1 - Funding Information:
We are grateful to the EC and the US Army European Office) for financial support to J.D.C.G. and M.A.L.T. to carry out this researc6.
PY - 1994
Y1 - 1994
N2 - To gain an understanding of the various factors which are likely to contribute to the overall extraction of metal cations by alkyl p-tert-butylcalix(4)arene esters, different approaches are considered. Thus, ligand-solvent interactions are detected from transfer enthalpies of calixarene esters in the appropriate solvents obtained calorimetrically. Conductance measurements are used to determine stability constants of metal cations and these ligands and ion-pair formations for the single and complexed electrolytes with the anion in the non-aqueous medium. Thermodynamic data (free energies, enthalpies and entropies) of complexation involving calixarene esters are for the first time derived from titration microcalorimetry and some representative data are reported. The extraction of metal cations from aqueous solutions by water insoluble calixarene esters is discussed.
AB - To gain an understanding of the various factors which are likely to contribute to the overall extraction of metal cations by alkyl p-tert-butylcalix(4)arene esters, different approaches are considered. Thus, ligand-solvent interactions are detected from transfer enthalpies of calixarene esters in the appropriate solvents obtained calorimetrically. Conductance measurements are used to determine stability constants of metal cations and these ligands and ion-pair formations for the single and complexed electrolytes with the anion in the non-aqueous medium. Thermodynamic data (free energies, enthalpies and entropies) of complexation involving calixarene esters are for the first time derived from titration microcalorimetry and some representative data are reported. The extraction of metal cations from aqueous solutions by water insoluble calixarene esters is discussed.
UR - http://www.scopus.com/inward/record.url?scp=0003320395&partnerID=8YFLogxK
U2 - 10.1351/pac199466030435
DO - 10.1351/pac199466030435
M3 - Article
AN - SCOPUS:0003320395
SN - 0033-4545
VL - 66
SP - 435
EP - 440
JO - Pure and Applied Chemistry
JF - Pure and Applied Chemistry
IS - 3
ER -