This table presents the following data relevant to nuclear magnetic resonance spectroscopy. Column definitions for the table are as follows.
Column heading | Definition |
Z | Atomic number |
Isotope | Element symbol and mass number |
Percent abundance | Natural abundance of the isotope in percent. An * indicates a radioactive nuclide; if no value is given, the nuclide is not present in nature or its abundance is highly variable |
I | Nuclear spin |
ν | Resonant frequency in megahertz for an applied field H0 of 1 tesla (in cgs units, 10 kilogauss). The resonant frequency scales with H0 |
Rel. sens. | Sensitivity relative to 1H (=1) assuming an equal number of nuclei and constant temperature. Values were calculated from the expressions: For constant H0: 0.0076508(μ/μN)3(I + 1)/I 2 For constant ν: 0.23871(μ/μN)(I + 1) |
μ |
Nuclear magnetic moment, in units of the nuclear magneton μN |
Q | Nuclear quadrupole moment in units of femtometers squared (1 fm2 = 10-2 barn). Because the determination of quadrupole moments requires knowledge of the electron configuration near the nucleus, values of Q in the literature tend to scatter considerably. The values quoted here come mainly from the review of Pyykkö (Ref. 3), otherwise from Ref. 1 |
The table includes all stable nuclides of non-zero spin for which spin and magnetic moment values have been measured, as well as selected radioactive nuclides of current or potential interest. At least one isotope is included for each element through Z = 95 for which data are available. See Ref. 1 for a complete listing of spins and moments.
The assistance of P. Pyykkö in providing data on nuclear quadrupole moments is gratefully acknowledged.
Z | Isotope | Percent abundance | I | ν/MHz for H0 = 1 T | Rel. sens. at const. H0 | Rel. sens. at const. ν | μ/μN | Q/fm2 |
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1 | 1n | 1/2 | 29.1647 | 0.32139 | 0.6850 | -1.91304272 | ||
1 | 1H | 99.885 | 1/2 | 42.5759 | 1.00000 | 1.0000 | +2.792847337 | |
1 | 2H | 0.0115 | 1 | 6.53566 | 0.00965 | 0.4094 | +0.857438228 | +0.2860 |
1 | 3H | * | 1/2 | 45.4129 | 1.21354 | 1.0667 | +2.9789625 | |
2 | 3He | 0.000134 | 1/2 | 32.4380 | 0.44220 | 0.7619 | -2.127750 | |
3 | 6Li | 7.59 | 1 | 6.2661 | 0.00850 | 0.3925 | +0.8220467 | -0.0808 |
3 | 7Li | 92.41 | 3/2 | 16.5483 | 0.29356 | 1.9434 | +3.25644 | -4.01 |
4 | 9Be | 100 | 3/2 | 5.9842 | 0.01388 | 0.7028 | -1.1776 | +5.288 |
5 | 10B | 19.9 | 3 | 4.5752 | 0.01985 | 1.7193 | +1.800645 | +8.459 |
5 | 11B | 80.1 | 3/2 | 13.6630 | 0.16522 | 1.6045 | +2.688649 | +4.059 |
6 | 13C | 1.07 | 1/2 | 10.7054 | 0.01591 | 0.2515 | +0.7024118 | |
7 | 14N | 99.636 | 1 | 3.0756 | 0.00101 | 0.1928 | +0.4037610 | +2.044 |
7 | 15N | 0.364 | 1/2 | 4.3142 | 0.00104 | 0.1014 | -0.2831888 | |
8 | 17O | 0.038 | 5/2 | 5.772 | 0.02910 | 1.5822 | -1.89379 | -2.558 |
9 | 19F | 100 | 1/2 | 40.0541 | 0.83400 | 0.9413 | +2.628868 | |
10 | 21Ne | 0.27 | 3/2 | 3.3631 | 0.00246 | 0.3949 | -0.661797 | +10.155 |
11 | 23Na | 100 | 3/2 | 11.2688 | 0.09270 | 1.3234 | +2.217522 | +10.4 |
12 | 25Mg | 10.00 | 5/2 | 2.6083 | 0.00268 | 0.7147 | -0.85545 | +19.94 |
13 | 27Al | 100 | 5/2 | 11.1031 | 0.20689 | 3.0424 | +3.641507 | +14.66 |
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