NMR: Difference between revisions
From Pumping Station One
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= Theory = | = Theory = | ||
NMR: | NMR: | ||
* Nuclear simply means we are concerned with the nucleus of the atoms we are interested in (so the protons and neutrons). | * '''Nuclear''' simply means we are concerned with the nucleus of the atoms we are interested in (so the protons and neutrons). | ||
* In essence, any atoms that have an odd number of protons or neutrons (or both) will behave like magnets. This is due to their '[https://en.wikipedia.org/wiki/Spin_(physics) spin]'. These are commonly referred to as "NMR active" (Common ones being Hydrogen-1 and Carbon-13). | * In essence, any atoms that have an odd number of protons or neutrons (or both) will behave like '''magnets'''. This is due to their '[https://en.wikipedia.org/wiki/Spin_(physics) spin]'. These are commonly referred to as "NMR active" (Common ones being Hydrogen-1 and Carbon-13). | ||
* By exposing atoms to a magnetic field and RF of a given frequency, we can put them into resonance. This can be measured, and is the basis for the technique. | * By exposing atoms to a magnetic field and RF of a given frequency, we can put them into '''resonance'''. This can be measured, and is the basis for the technique. | ||
Whereas other spectroscopic techniques are concerned with the electrons of an atom. [https://www.youtube.com/watch?v=TJhVotrZt9I Nonetheless, the electrons surrounding an atom influence how much the nucleus is "diamagneticically shielded" from the effects of the RF of the NMR.] This allows Hydrogen atoms in different states to be observed. | Whereas other spectroscopic techniques are concerned with the electrons of an atom. [https://www.youtube.com/watch?v=TJhVotrZt9I Nonetheless, the electrons surrounding an atom influence how much the nucleus is "diamagneticically shielded" from the effects of the RF of the NMR.] This allows Hydrogen atoms in different states to be observed. | ||
