2. Shown on the are dewn on the next page are the IR spectra of the four isomeri

Question

2. Shown on the are dewn on the next page are the IR spectra of the four isomeric butyl chlorides. The spectra are clearly different, as are their spectra:-1380 em and-525 em. Notice the peaks in those two regions for the isomers. M structures. Focus on two of the absorption regions in the variability in intensity and appearance of the a) For the two IR spectra below, specify in the white space on the spectra, whethirtify your contain an n-butyl, sec-butyl, isobutyl, or tert-butyl choices using the hite space on the spectra, whether they I group. Circle the peaks that justify your spectra on the next page for comparison. Remember to compare the two b) Which of these two spectra is of an aromatic compound? Mark the peaks that justify your choice. Put all your answers on this page. 500 500 500

Explanation / Answer

Ist spectrum is most likely of n-butyl chloride. the peaks at 700, 770, 1500 cm-1 are characteristic strong bands which meatches in both the reference and the given spectrum.

IInd spectrum is clearly of tert-butyl chloride. The peaks at 1500, 1380, 1160 and 1220 cm-1 are all very clear in the given spectra same as the spectrum given for pure tert-butyl chloride.

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