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NMR of Inert Gases in Aqueous Solutions

  • R. K. Mazitov
  • K. M. Enikeev
  • A. V. Ilyasov

Abstract

Theoretical and experimental data on ion nuclear relaxation in liquids offer detailed information concerning molecular dynamics and structure of solvent [1–4l. Ions affect a medium they are dissolved in. Simple neutral particles, namely noble gas atoms, change the state of neighbouring molecules to a much less extent. Noble gas nuclear relaxation has been studied for liquid noble gases [.5], for ordinary liquids only Xenon nuclear relaxation was studied [6–8]. This work presents the results obtained for the longitudinal relaxation time T1 of 83 Kr and 131 Xe nuclei and δ chemical shifts of 83Kr and 129 Xe nuclei in aqueous solutions. “Spectrally pure” xenon and krypton with natural content of isotope was used for all measurements. liquids with gases dissolved were kept under pressure up to~35 atm for Xe and 10 atm for Kr in thickwalled quartz ampules, concentrations of Xe being ~0.1 M and Kr ~0.02 M. The measurements were made on Brucker WM-250 Spectrometer. Chemical shifts δ were determined relative to a signal in gas phase extrapolated to zero pressure. A positive δ value means the shift of a resonance to lower fields in comparison with a standard, The accuracy of measurements was 0.02 ppm for δ and 5% for T1

Keywords

Nuclear Relaxation Cage Center MeOH Molecule Ordinary Liquid Salt LiCI 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • R. K. Mazitov
    • 1
  • K. M. Enikeev
    • 2
  • A. V. Ilyasov
    • 2
  1. 1.Kurnakov Institute of General and Inorganic ChemistryUSSR Academy of SciencesMoscowUSSR
  2. 2.Institute of Organic and Physical ChemistryUSSR Academy of SciencesKazanUSSR

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