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Phosphorus 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)
31P
100
1/2
10.8394
0
202.404
6.63*10-2
6.63*10-2
 

APPLICATION FIELDS

31P NMR spectroscopy is largely applied on organophosphorus compounds, phosphorus-containing inorganic compounds (polyphosphanes ...), and nucleic acids.
NMR REFERENCES
The standard reference sample is 85% H3PO4 in aqueous solution (absolute frequency is 40.480742 MHz with respect to 100.00 MHz of TMS.). Also see IUPAC recommendations for reporting the NMR chemical shits of all nuclei relative to the 1H resonance of TMS (02JMR323-156).
NMR PARAMETERS
 31P chemical shifts range is 1900 ppm ranging from +1400 to -500 ppm.
1H-31P and 31P-31P coupling constants
NMR EXPERIMENTS
1D 1H-decoupled vs 1H-coupled 31P spectra.
1D 31P-decoupled vs 31P-coupled 1H spectra.
2D 1H-31P correlation experiments with phosphorus detection using Hahn-Echo extended approach (HEED)( 91MRC1045 ).
2D 1H-31P and 31P-1H HOESY ( 83JACS6994 ) experiments
2D 1H-31P correlation experiments using proton detection.
2D 31P-31P COSY experiments ( 84ANG317 ).
2D 13C-31P HETCOR experiments using phosphorus or carbon detection ( 89MRC599 , 92MRC587 , 95MRC95 ).
2D 31P-X correlation experiments using phosphorus detection for X=13C ( 89MRC599 ), 15N ( 01JMR165-148 ), 57Fe ( 88JACS5661 , 88MRC895 ), 61Ni ( 88MRC895 ), 109Ag ( 90MRC145 ), 103Rh, 183W ( 88MRC895 ), 187Os, 195Pt ( 91MRCS11 ), and 199Hg.

A complete review on inverse-detected NMR experiments based on 31P has been published ( 98COC97 ).

BIBLIOGRAPHY
Excelent reviews with a extensive database of chemical shifts and coupling constants have been published: B97BER700, B84GOR, and B88VER, 00ENC1735 .
In-vivo NMR applications ( 00ENC851 )
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