Difference between revisions of "NMR spectrometer"
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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. | 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|300px| Calculated NMR showing coupling for ethanol ]] | [[Image:1H NMR Ethanol Coupling shown.GIF|thumb|left|300px| Calculated NMR showing coupling for ethanol ]] | ||
[[Image:1H NMR Ethyl Acetate Coupling shown.GIF|thumb|300px| Calculated NMR showing coupling for ethyl acetate]] | [[Image:1H NMR Ethyl Acetate Coupling shown.GIF|thumb|300px| Calculated NMR showing coupling for ethyl acetate]] | ||
Revision as of 10:54, 23 September 2010
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Background
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.
Operation
This provides instructions for a Bruker Advance 300 NMR.