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Oxygen 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)
17O
3.8*10-2
5/2
-3.62808
-2.558*10-2
67.784
3.7*10-2
1.08*10-5
 

APPLICATION FIELDS

 17O NMR spectroscopy has been widely used for both inorganic and organic compounds. However, the extremely low sensitivity is the major problem and labeling can be required. Solid-state 17O NMR applications have been also reported.
NMR REFERENCES
D2O is used as an external reference sample (absolute frequency of 13.556457 MHz with respect to 100.00 MHz of TMS). Sometimes, neat acetone (T=301K) can also be used (absolute frequency of 13.564269 MHz). Also see IUPAC recommendations for reporting the NMR chemical shits of all nuclei relative to the 1H resonance of TMS (02JMR323-156).
NMR PARAMETERS
 17O chemical shifts cover a range of 1650 ppm (from -50ppm to +1600ppm).
Only relatively large J(17O,X)coupling constants can be measured.
NMR EXPERIMENTS
1D 17O spectrum. Methods to avoid the acoustic ringing ( 87PROG267 ) (RIDE sequence) and to suppress large solvent resonances ( 93JMRA95-101 ) can be required. Baseline distortions can be avoided using adiabatic inversion pulses in the RIDE sequence ( 00MRC459 )
2D 17O-1H correlation experiment ( 96MRC703 ). Multiple signal suppresion described in 98JMR168-134
BIBLIOGRAPHY
  • Several interesting reviews have been published: B97BER319, 96ENC3430 , 94PROG171 , 94PROG239 , 00ENC722 .
  • Group VI NMR: B79HAR383.
  • 17O NMR applied on steroids at natural abundance ( 94MRC608 ), chromanone and -flavanone derivatives ( 01MRC463 )
  • Solvent Effects on Oxygen-17 Chemical Shifts in Methyl Formate ( 01JMR1-148 )
  • Triple-Quantum-Filtered 17O NMR Water Molecules Strongly Bound to Macromolecules in Solution ( 01JMR11-148 )
  • 85JACS2654
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