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Titolo:
Guest and subunit exchange in self-assembled ionophores
Autore:
Cai, MM; Sidorov, V; Lam, YF; Flowers, RA; Davis, JT;
Indirizzi:
Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 & Biochem, College Pk, MD 20742 USA Univ Toledo, Dept Chem, Toledo, OH 43606 USA Univ Toledo Toledo OH USA 43606 v Toledo, Dept Chem, Toledo, OH 43606 USA
Titolo Testata:
ORGANIC LETTERS
fascicolo: 12, volume: 2, anno: 2000,
pagine: 1665 - 1668
SICI:
1523-7060(20000615)2:12<1665:GASEIS>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
CROWN-ETHERS; CESIUM ION; KINETICS; COMPLEXES; ENCAPSULATION; NITROMETHANE; NMR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Davis, JT Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 College Pk, MD 20742 USA
Citazione:
M.M. Cai et al., "Guest and subunit exchange in self-assembled ionophores", ORG LETT, 2(12), 2000, pp. 1665-1668

Abstract

[GRAPHICS]Self-assembled ionophores, formed by hydrogen bonding of isoG 1 around a cation, are dynamic structures. Multinuclear NMR spectroscopy in CD3CN-CDCl3showed that cation exchange is >10(4) faster than exchange of isoG 1 ligand in (isoG 1)(10)-Cs+ Ph4B-. The cationic guest also affected the kinetic stability of the complex. 2D-EXSY NMR experiments in CDCl3 showed that ligand exchange was 2 orders of magnitude faster for the Li+-decamer than for the Cs+-decamer.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 21:31:08