| Chemical
Shift |
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| Up
to this point, we have been treating nuclei in general terms. |
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| Simply
comparing 1H, 13C, 15N etc. |
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| If all 1H
resonate at 500MHz at a field strength of 11.7T, |
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| NMR would not be very
interesting |
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| The chemical environment for each nuclei results in a unique local |
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| magnetic field (Bloc)
for each nuclei: |
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| Beff
= Bo - Bloc ---
Beff = Bo( 1 - s ) |
| s is the magnetic shielding of the nucleus |