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Chemical shift nmr spectroscopy table
The peak at is due to a carbon in a carbon-oxygen double bond. The peak at just under is due to a carbon-oxygen double bond. Notice that we shall not try to understand why aromatic protons are deshielded or why alkynyl protons are not deshielded as much as vinylic protons. Hornak, Rochester Institute of Technology Useful Texts The textbooks listed below are not required, but you may find them useful, especially if you do not already have a general structure determination textbook such as the Lambert or Silverstein books. You can also subscribe without commenting. J -coupling - first order multiplets. Becker, Academic Press, 2nd Ed. It is attached to an admittedly complicated R group the rest of the molecule.