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Titolo:
Synthesis and complexation properties of 1,3-alternate calix[4]arene-bis(crown-6) derivatives
Autore:
Pellet-Rostaing, S; Chitry, F; Nicod, L; Lemaire, M;
Indirizzi:
Univ Lyon 1, Lab Catalyse & Synth Organ, CPE Lyon, F-69100 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69100 on, F-69100 Villeurbanne, France
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
fascicolo: 8, , anno: 2001,
pagine: 1426 - 1432
SICI:
1472-779X(2001):8<1426:SACPO1>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
NITRATE AQUEOUS-MEDIUM; ION-BINDING-SITES; NANOFILTRATION-COMPLEXATION; UPPER-RIM; CESIUM; CALIX<4>ARENES; CONFORMATION; CALIXARENES; STRONTIUM; CATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Lemaire, M Univ Lyon 1, Lab Catalyse & Synth Organ, CPE Lyon, 43 Bd 11 Novembre 1918,F-69100 Villeurbanne, France Univ Lyon 1 43 Bd 11 Novembre 1918 Villeurbanne France F-69100
Citazione:
S. Pellet-Rostaing et al., "Synthesis and complexation properties of 1,3-alternate calix[4]arene-bis(crown-6) derivatives", J CHEM S P2, (8), 2001, pp. 1426-1432

Abstract

Calix[4]arene-bis(crown-6) was converted into its di- and tetra-carboxy and hydroxy derivatives as water-soluble receptors. The complexation properties of these ionophores were studied for alkali cations in methanolic and aqueous media. Stability constants were calculated by UV-Vis spectroscopy. All ligands showed a more or less pronounced affinity for the larger cations. Cs+/Na+ selectivity is enhanced by the number and the nature of the substituents. Compound 7 represents the most selective ligand for the Cs+ cation in methanol and in basic aqueous media. For selective Cs+/Na+ separation, the efficiency of the ligands was evaluated by means of a nanofiltration system.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 10:27:44