![]() The carbon in the CH 2 group is attached to 2 hydrogens, a carbon and an oxygen. The carbon in the CH 3 group is attached to 3 hydrogens and a carbon. ![]() In this case there are two peaks because there are two different environments for the carbons. Remember that each peak identifies a carbon atom in a different environment within the molecule. It is possible that small errors may have been introduced during the process of converting them for use on this site, but these won't affect the argument in any way. Note: The nmr spectra on this page have been produced from graphs taken from the Spectral Data Base System for Organic Compounds ( SDBS) at the National Institute of Materials and Chemical Research in Japan. ![]() Taking a close look at three C-13 NMR spectra Unless you are familiar with C-13 NMR, you should read the introduction to C-13 NMR first by following this link. Important: If you have come straight to this page via a search engine, you should be aware that this is the second of two pages about C-13 NMR. ![]() This page takes an introductory look at how you can get useful information from a C-13 NMR spectrum.
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