NMR Properties of helium

Common reference compound: helium gas.

Table of NMR-active nucleus propeties of helium
  Isotope 1 Isotope 2 Isotope 3
Isotope 3He
Natural abundance /% 0.000137
Spin (I) 1/2
Frequency relative to 1H = 100 (MHz) 76.179437
Receptivity, DP, relative to 1H = 1.00 0.000000606
Receptivity, DC, relative to 13C = 1.00 0.00356
Magnetogyric ratio, γ (107 rad T-1 s-1) -20.3801587
Magnetic moment, μ (μN) -3.685154336
Nuclear quadrupole moment, Q/millibarn -
Line width factor, 1056l (m4) -

References

  1. R.K. Harris in Encyclopedia of Nuclear Magnetic Resonance, D.M. Granty and R.K. Harris, (eds.), vol. 5, John Wiley & Sons, Chichester, UK, 1996. I am grateful to Professor Robin Harris (University of Durham, UK) who provided much of the NMR data, which are copyright 1996 IUPAC, adapted from his contribution contained within this reference.
  2. J. Mason in Multinuclear NMR, Plenum Press, New York, USA, 1987. Where given, data for certain radioactive nuclei are from this reference.
  3. P. Pyykkö, Mol. Phys., 2008, 106, 1965-1974.
  4. P. Pyykkö, Mol. Phys., 2001, 99, 1617-1629.
  5. P. Pyykkö, Z. Naturforsch., 1992, 47a, 189. I am grateful to Professor Pekka Pyykkö (University of Helsinki, Finland) who provided the nuclear quadrupole moment data in this and the following two references.
  6. D.R. Lide, (ed.), CRC Handbook of Chemistry and Physics 1999-2000 : A Ready-Reference Book of Chemical and Physical Data (CRC Handbook of Chemistry and Physics, CRC Press, Boca Raton, Florida, USA, 79th edition, 1998.
  7. P. Pyykkö, personal communication, 1998, 204, 2008, 2010.
  8. The isotopic abundances are extracted from the naturally occurring isotopes section within WebElements.

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helium atomic number