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Titolo:
Heteroditopic rhenium(I) and ruthenium(II) bipyridyl calix[4]arene receptors for binding cation-anion ion pairs
Autore:
Cooper, JB; Drew, MGB; Beer, PD;
Indirizzi:
Univ Oxford, Dept Chem, Inorgan Chem Lab, Oxford OX1 3QR, England Univ Oxford Oxford England OX1 3QR gan Chem Lab, Oxford OX1 3QR, England Univ Reading, Dept Chem, Reading RG6 2AD, Berks, England Univ Reading Reading Berks England RG6 2AD eading RG6 2AD, Berks, England
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 4, , anno: 2001,
pagine: 392 - 401
SICI:
1472-7773(2001):4<392:HRARBC>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEAR-MAGNETIC-RESONANCE; SIMULTANEOUS COMPLEXATION; SELECTIVE RECOGNITION; POTASSIUM CATION; EXTRACTION; CHLORIDE; SYSTEMS; SODIUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Beer, PD Univ Oxford, Dept Chem, Inorgan Chem Lab, S Parks Rd, Oxford OX1 3QR, England Univ Oxford S Parks Rd Oxford England OX1 3QR d OX1 3QR, England
Citazione:
J.B. Cooper et al., "Heteroditopic rhenium(I) and ruthenium(II) bipyridyl calix[4]arene receptors for binding cation-anion ion pairs", J CHEM S DA, (4), 2001, pp. 392-401

Abstract

New heteroditopic ion pair receptors that contain rhenium(I) and ruthenium(II) bipyridyl amide anion recognition sites covalently linked to a lower rim calix[4]arene tetraester alkali metal cation binding site have been prepared and shown to bind alkali metal (Li+, Na+)-halide (Br-, I-) ion pair species. Proton NMR titration studies reveal the lower rim ester co-bound alkali metal cation significantly enhances the strength of bromide and iodide binding in acetonitrile solutions with the largest positive co-operative binding effect of sixtyfold observed with bromide and the lithium complex of one receptor. Solid/liquid extraction experiments show two of the receptorsare capable of solubilising NaCl and NaOAc in dichloromethane solutions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 22:51:46