IR Spectral Interpretation Workshop, Quiz 1


Examine the spectrum in the figure, determine from the pattern of peaks whether the sample contains methyl groups, methylene groups, or both, and then assign as many of the peaks as you can.

In this and all subsequent problem spectra, the state of the sample (solid, liquid, or gas) and the sampling technique will be given because this information is needed to properly interpret spectra, and you would know this information if you ran the sample spectrum yourself. The correct peak assignments for these spectra will be given in the next installment. Until then . . . happy interpreting!

(Please note the * next to each question means that an answer must be filled in to complete and submit the quiz.)

Figure 1: The IR spectrum of a solid measured as a capillary thin film melt.

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