Probing Molecular Cavities in α-Cyclodextrin Solutions by Xenon NMR

Autor: Jacques Reisse, Stephen J. Heyes, Robert Ottinger, Kristin Bartik, Michel Luhmer
Rok vydání: 1995
Předmět:
Zdroj: Journal of Magnetic Resonance, Series B. 109:164-168
ISSN: 1064-1866
DOI: 10.1006/jmrb.1995.0005
Popis: 129 Xe NMR has been used to investigate intermolecular interactions between xenon and α-cyclodextrin in H 2 O and in DMSO. Nuclear Overhauser enhancement effects confirmed the formation of a xenon–cyclodextrin complex. Chemical shifts were measured in solutions containing different concentrations of α-cyclodextrin and in solutions containing linear oligosaccharides. The experimental data are interpreted on the basis of a three-site model for xenon. The binding characteristics of the xenon–cyclodextrin system, including the 129 Xe NMR chemical shift in the cavity and the equilibrium constants, were determined and are discussed.
Databáze: OpenAIRE