DescriptionESC Organic Chemistry II
Spectra Analysis
Name:___________________________________
Date:______________
Solve the following four problems, and for each problem explain in detail on which
characteristics of the spectra you based your choice.
1. Which of these two C9H10O2 isomers would give the IR spectrum shown below? Indicate
and assign on the spectrum which signals are present (or absent) to support your choice.
O
O
OCH2CH3
ethyl benzoate
OH
2,4-dimethylbenzoic acid
2. A compound has the molecular formula C7H9N. Determine its structure based on the
following spectrum, explaining the reasons for your choice.
3. Identify this molecule from NMR, mass spectra
4. Identify this molecule from NMR and mass spectra
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