*(c) The infrared spectrum of this unknown has a prominent, broad peak at 3370 cm?¹. There is also a strong peak at 1159 cm?¹. The mass spectrum of this unknown does not show a molecular ion peak. You will have to deduce the molecular weight of this unknown from the heaviest fragment ion peak, which arises from the loss of a methyl group from the molecular ion.
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The infrared spectrum has a broad peak at 3370 cm$^{-1}$, which suggests the presence of an O-H or N-H bond (indicating alcohol, amine, or amide functional groups). Show more…
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The IR spectrum of an unknown compound D has a prominent broad absorption band at 3370 cm-1. There is also a strong absorption band at 1159 cm-1. The mass spectrum of D does not show a molecular ion peak. However, the heaviest fragment ion peak arises from the loss of a methyl group from the molecular ion. Assign a possible structure of D based on the MS and IR data.
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