Jump to main content
Jump to site search

Issue 5, 2001
Previous Article Next Article

NMR study of the reversible complexation of xenon by cucurbituril

Author affiliations

Abstract

The interaction of xenon with cucurbituril, a synthetic receptor, in aqueous solutions is investigated by 129Xe and 1H NMR spectroscopy. Xenon is reversibly trapped into the cavity to form a 1 ∶ 1 host–guest complex. The exchange between the free and the complexed xenon is slow on the 129Xe NMR chemical shift time scale but fast on the 1H NMR chemical shift time scale. The apparent association constant of xenon for cucurbituril can be obtained from analysis of the 1H spectra and is estimated to be around 200 M−1 at 298 K. Interestingly, even though no H-bonding or electrostatic interactions play a role in the stabilisation of the complex, its stability is comparable to the stability of cucurbituril complexes with certain aryl- and alkyl-ammonium ions.

Graphical abstract: NMR study of the reversible complexation of xenon by cucurbituril

Back to tab navigation

Publication details

The article was received on 25 Oct 2000, accepted on 14 Mar 2001 and first published on 10 Apr 2001


Article type: Paper
DOI: 10.1039/B008623L
Citation: J. Chem. Soc., Perkin Trans. 2, 2001,0, 804-807
  •   Request permissions

    NMR study of the reversible complexation of xenon by cucurbituril

    M. El Haouaj, M. Luhmer, Y. H. Ko, K. Kim and K. Bartik, J. Chem. Soc., Perkin Trans. 2, 2001, 0, 804
    DOI: 10.1039/B008623L

Search articles by author

Spotlight

Advertisements