2D NMR SPECTRA INTERPRETATIONS–How To Read COSY Spectra

27 04 2013

ORGANIC CHEMISTRY SELECT

Two-dimensional nuclear magnetic resonance spectroscopy (2D NMR) is a set of nuclear magnetic resonance spectroscopy(NMR) methods which give data plotted in a space defined by two frequency axes rather than one. Types of 2D NMR includecorrelation spectroscopy (COSY), J-spectroscopyexchange spectroscopy (EXSY), and Nuclear Overhauser effect spectroscopy (NOESY). Two-dimensional NMR spectra provide more information about a molecule than one-dimensional NMR spectra and are especially useful in determining the structure of a molecule, particularly for molecules that are too complicated to work with using one-dimensional NMR.

The first two-dimensional experiment, COSY, was proposed by Jean Jeener, a professor at the Université Libre de Bruxelles, in 1971. This experiment was later implemented by Walter P. Aue, Enrico Bartholdi and Richard R. Ernst, who published their work in 1976.

LEARN MORE AT

http://faculty.sdmiramar.edu/fgarces/LabMatters/Instruments/NMR/Spectra_Interp/Reading2D_Spectrum.htm

 

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