For each of the following: list identifiable functional groups in each unknown a

Question

For each of the following:  list identifiable functional groups in each unknown and then identify which of the following each spectrum is: Benzaldehyde, Butyl Acetate, m-Chlorotoluene, o-Chlorotoluene, p-Chlorotoluene, Cyclohexene, Cyclopentanol, Ethylbenzene, N-Ethylaniline, 2-Heptanone, 4-Heptanone, 3-Methyl-2-butanol, Propionic acid, or m-Toluidine.

a)

c)

d)

110 100 80 %T- 60 40 20 10 4000 19 3000 18 17 2000 Wavenumber [cm-1] 1000 Results of Peak Find No. Position Intensity 647.965 28.6225 685.57 24.3138 3 712.569 53.9646 742.46 23.1811 826.348 40.0953 1023.05 82.5945 1071.26 78.4916 1165.76 56.0153 1201.43 27.3593 10 1287.25 75.0967 11 1310.39 60.8068 12 1390.42 77.0844 13 455.03 64.3644 14 1583.27 55.9322 15 1595.81 54,9877 16 1696.09 18.8298 17 2736.49 87.2433 18 2817.49 86.5586 19 3063.37 89, 3192 600

Explanation / Answer

a) Based on the given IR stretchings at 1696 cm-1,we conclude that the given compound is Benzaldehyde.

b) The compound would be propanoic acid as it has the peaks at 1706 and 2984 (broad)

c) The compound would be 2-heptanone as it shows the stretching at 1709 and 2875-2961 (two peaks-unsymmetric ketone)

d) The compound would be m-toluidine as it is having peaks at 3300, four peaks at 688-900

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