83Kr nuclear magnetic moment in terms of that of 3He |
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Authors: | Włodzimierz Makulski |
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Institution: | Laboratory of NMR Spectroscopy, Faculty of Chemistry, University of Warsaw, , 02‐093 Warszawa, Poland |
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Abstract: | High resolution NMR spectroscopy was applied to precisely determine the 83Kr nuclear magnetic dipole moment on the basis of new results available for nuclear magnetic shielding in krypton and helium‐3 atoms. Small amounts of 3He as the solutes and 83Kr as the buffer gas were observed in 3He and 83Kr NMR spectra at the constant external field, B0 = 11.7578 T. In each case, the resonance frequencies (νHe and νKr) were linearly dependent on the density of gaseous solvent. The extrapolation of experimental points to the zero density of gaseous krypton allowed for the evaluation of both resonance frequencies free from intermolecular interactions. By combining these measurements with the recommended 83Kr chemical shielding value, the nuclear magnetic moment could be determined with much better precision than ever before, μ(83Kr) = ?0.9707297(32)μN, with the improvement due to the greater accuracy of the spectral data. Copyright © 2014 John Wiley & Sons, Ltd. |
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Keywords: | 83Kr nuclear magnetic moment 83Kr and 3He NMR spectra gas‐phase measurements |
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