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Lithium NMR

PHYSICAL PROPERTIES
 

Isotope
Natural 
Abundance
(%)
Nuclear
Spin
(I)
Magnetogyric
ratio
(107*rad/T*s)
Quadruple 
moment
(1028*Q/m2)
Resonance
frequency
(MHz)
at 11.744T
(500 MHz for 1H)
Relative 
sensitivity
(1H=1.00)
Absolute 
sensitivity
(1H=1.00)
6Li
7.59
1
3.9371709
-8.08*10-4
73.578
8.5*10-3
6.31*10-4
7Li
92.41
3/2
10.3977013
-4.01*10-2
194.317
0.29
0.27
 

APPLICATION FIELDS

Both 6Li and 7Li NMR spectroscopy has been extensively applied on inorganic and organometallic lithium-containing compounds as well as on biochemical and physiological studies. The 6Li isotope has the smallest quadrupole moment for any nucleus and it can be considered as an spin-1/2 nucleus. Therefore, sharp linewidths are achieved with compared to the 7Li isotope. Thus, despite its lowest sensitivity 6Li can be preferred instead of  7Li detection. Specific labeling with 6Li has also been reported.
NMR REFERENCES
Both lithium isotopes are usually referenced to external standard references 0.1M or 1M LiCl in D2O, THF-d8 or Methanol-d4 (absolute frequency: 14.716086 MHz for 6Li and 38.863797 MHz for 7Li with respect to 100.00 MHz of TMS resonance). Also see IUPAC recommendations for reporting the NMR chemical shits of all nuclei relative to the 1H resonance of TMS (02JMR323-156).
NMR PARAMETERS
NMR EXPERIMENTS
BIBLIOGRAPHY
Interesting reviews on Li NMR: B96GIE247, 92ACC89 , 96ENC2807 .
The alkali Metals NMR: B79HAR129, 00ENC1584 .
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