All Questions
Tagged with physical-organic-chemistry nmr-spectroscopy
4
questions
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vote
1
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Precessional frequency in H-NMR
Suppose we have a hydrogen nucleus. Now, let's apply an external magnetic field $B$. As the magnetic field is applied, the hydrogen nucleus undergoes precessional motion about its own axis with ...
- 297
2
votes
0
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Origin of the NMR shielding
In a paramgnetic material the induced dipole moment of atoms or (molecules) of the material aligns with the external field. I can understand this by Zeeman splitting. A term symbol splits into states ...
- 766
4
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1
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What exchange timescales are needed to cause decoupling in NMR?
I'll try to explain the source of my confusion as clear as possible:
(*) The methyl protons in toluene are decoupled because the C-C bond between the methyl group and benzene allows very fast ...
- 497
3
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0
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Why does Larmor precession occur in NMR?
Larmor precession is the phenomenon that in NMR the spin (and by default also the magnetic dipole moment) of protons does not line up with the applied magnetic field but rather precesses around this ...
- 497