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

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

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NMR Spectroscopy
What is shielding in NMR?

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

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NMR Spectroscopy
All hydrogen atoms

are attached to carbon
have the same resonance frequency
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?

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

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