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Titolo:
Lower rim substituted tert-butyl calix[4]arenes (I). The structure and complexing properties in ion-selective PVC membrane electrodes
Autore:
Bochenska, M; Banach, R; Zielinska, A; Kravtsov, VC;
Indirizzi:
Gdansk Tech Univ, Dept Chem, PL-80952 Gdansk, Poland Gdansk Tech Univ Gdansk Poland PL-80952 pt Chem, PL-80952 Gdansk, Poland
Titolo Testata:
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
fascicolo: 3-4, volume: 39, anno: 2001,
pagine: 219 - 228
SICI:
1388-3127(200104)39:3-4<219:LRSTC
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOLVENT; ALKALI; COMPLEXATION; IONOPHORES; INCLUSION; CONSTANTS; CATIONS; CRYSTAL; PHASE;
Keywords:
tert-butylcalix[4]arene amides; ion-selective membrane electrodes; selectivity; crystal structure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Bochenska, M Gdansk Tech Univ, Dept Chem, Ul Narutowicza 11-12, PL-80952 Gdansk, Poland Gdansk Tech Univ Ul Narutowicza 11-12 Gdansk Poland PL-80952
Citazione:
M. Bochenska et al., "Lower rim substituted tert-butyl calix[4]arenes (I). The structure and complexing properties in ion-selective PVC membrane electrodes", J INCL P MA, 39(3-4), 2001, pp. 219-228

Abstract

Some di- and tetraamide tert-butylcalix[4]arenes were synthesized and described. Their ionophoric properties were studied in liquid membrane ion-selective electrodes. The correlation between the chemical structure (conformation in solution determined by H-1 NMR) and potentiometric ion-selectivity and complex formation constant have been studied. The PVC membrane electrodes based on tetraamides 8-11 show high sodium selectivity, are stable and long lasting. Disubstituted amides 1-7 are selective for larger and more lipophilic ions, as for example guanidinium ion. The crystal structure of the diamide 4 was determined by single crystal X-ray analysis. Crystals of 4 aretriclinic, space group P-1, with: a = 16,669(8), b = 17.795(10), c = 20.984(8) Angstrom, alpha = 91.08(4)degrees, beta = 91.60(3)degrees, gamma = 90.73(4)degrees and Z = 4. Ionophore 4 posseses a distorted cone conformation and is substituted at the proximal phenol rings.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 15:13:22