Part A) Assign BOTH IR spectra below to TWO of the FOUR provided structures A - D. TWO of the four structures do NOT match to the provided spectra at all. Part B) Identify the peaks that are associated with specific bonds of the structure and list the corresponding functional group that the specific bonds belong to. Re-create the example table below that organizes this information. Use the wavenumbers that are already labeled on the spectra. Example table (EACH spectrum needs to have a table): wavenumber (cm-1) 2978 3300 HO A Spectrum II Corresponding Bond Corresponding Functional Group 2926 Type C(sp3)-H N-H 2986-2665 OH B POCE 1716 SEVENTEEN 1715 0 alkyl amine C 1500 H 1000 D

Each of the IR spectra below corresponds to one of the aromatic compounds listed below. Determine the molecule that corresponds to each spectrum.

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Determine whether each of the IR spectra given is consistent with the structure of an alcohol, a ketone, a carboxylic acid, an amide or an amine. (Please note that the wavenumbers were not clear from Spectrum 1, so I have written them separately below the actual numbers) USEFUL SIGNALS IN THE DIAGNOSTIC REGION STRUCTURAL UNIT FREQUENCY (CM) Single Bonds (2-H) HO 3200-3600 (broad, I. 2200-3600 (very broad) 3350-3500 3300 STRUCTURAL UNIT FREQUENCY (cm) Double Bonds -1650-1820 (strong) See below 1600-1700 Discussed 1450-1600 1650-2000 Chapter 17 Triple Bonds 3000-3100 CEC 2100-2200 2850-3000 2750 and 2850 (two weak signals) CEN 2200-2300 WM