Difference between revisions of "NMR spectrometer"

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*[[wikipedia:NMR_spectroscopy]]
*[[wikipedia:NMR_spectroscopy]]
*[http://riodb01.ibase.aist.go.jp/sdbs/cgi-bin/direct_frame_top.cgi Spectral database including HNMR]
*[http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/Spectrpy/nmr/nmr1.htm#nmr1 NMR primer William Reusch MSU]
*[http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/Spectrpy/nmr/nmr1.htm#nmr1 NMR primer William Reusch MSU]
*[http://en.citizendium.org/wiki/NMR_spectroscopy citizendium NMR article]
*[http://en.citizendium.org/wiki/NMR_spectroscopy citizendium NMR article]
*[http://www.chem.queensu.ca/FACILITIES/NMR/nmr/webcourse/list.htm NMR animations from Queens University]
*[http://www.chem.queensu.ca/FACILITIES/NMR/nmr/webcourse/list.htm NMR animations from Queens University]

Revision as of 12:05, 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.

External Links