Difference between revisions of "NMR spectrometer"

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=== Significance ===
=== Significance ===
Protons create different resonance spikes depending where they are located on the molecule. Non identical protons will exhibit individual peaks. But equivalent protons will couple to create a single stronger peak. NMR
Protons create different resonance spikes depending where they are located on the molecule. Non identical protons will exhibit individual peaks. But equivalent protons will couple to create a single stronger peak.  


[[Image:1H NMR Ethanol Coupling shown.GIF|thumb|left|300px| Calculated NMR showing coupling for ethanol ]]
[[Image:1H NMR Ethanol Coupling shown.GIF|thumb|left|300px| Calculated NMR showing coupling for ethanol ]]

Revision as of 12:02, 23 September 2010

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Background

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Nuclear magnetic resonance NMR spectroscopy is a sensitive chemical analytical technique which detects the magnetic properties of certain atoms such as hydrogen and carbon. The resulting spectrum can be compared against a database of known NMR signatures to identify atoms or functional groups in sample mixture. A typical application is to use NMR to prove that a sample pure or has completed a reaction.

Significance

Protons create different resonance spikes depending where they are located on the molecule. Non identical protons will exhibit individual peaks. But equivalent protons will couple to create a single stronger peak.

Calculated NMR showing coupling for ethanol
Calculated NMR showing coupling for ethyl acetate


Operation

This provides instructions for a Bruker Advance 300 NMR.

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