Problems in Interpreting Infrared Spectra

Using the data given in Tables 1.1 and 1.2, you should now be able to identify the common functional groups present in the compounds whose spectra comprise Samples 1 to 20. Remember that it is not sufficient to identify a compound as simply a carbonyl compound. If you observe a carbonyl peak, you should check for the presence of an aromatic ring or a double bond in the molecule, then use the data in Table 1.2 to say what type of carbonyl group e.g. anhydride, ketone) is present in the sample. Note that some spectra are consistent with more than one structural type, since ranges of frequencies can overlap. All the spectra are run on pure liquids or nujol mulls. [Pg.7]

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