NMR Spectroscopy
When placed in a magnetic field, all the random spins of the nuclei

rotate to 90° away from the induced field
align with the magnetic field
reverse direction
stop

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NMR Spectroscopy
What is shielding in NMR?

Putting metal around an Rf source
Blocking parts of a molecule from Rf radiation
When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei
Using a curved piece of metal to block an opponents attack

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NMR Spectroscopy
All hydrogen atoms

have the same resonance frequency
are attached to carbon
resonate at different frequencies depending on their environment.
resonate at about the same frequency as carbon

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NMR Spectroscopy
Why is it important to use a deuterated solvent?

Expensive solvents work best with NMR
They dissolve polymer the fastest
So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition
NMR uses least of this solvent

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