Interpreting IR spectra is a skill that often requires some amount of practice, which, in turn, necessitates access to a collection of IR spectra. Virtual ChemLabhas a spectra library containing more than 700 IR spectra. In this assignment, you will take advantage of this by interpreting the IR spectra of four similar compounds with different functional groups. After completing this assignment, you may wish to select other compounds for additional practice.
1. Write the IUPAC names for the following four structures:
___Benzyl Chloride_____________________________________________________
____Benzaldehyde________________________________________________
____Benzyl alcohol______________________________________________
Benzoic Acid
2. Identify the relevant peaks for each of the IR spectra and record the position and associated functional group for each in the IR tables.
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Benzyl ChlorideList position (cm-1) & functional group
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4.
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1.
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5.
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2.
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6.
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3.
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7.
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BenzaldehydeList position (cm-1) & functional group
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4.
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1.
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5.
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2.
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6.
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3.
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7.
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Benzyl alcoholList position (cm-1) & functional group
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4.
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1.
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5.
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2.
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6.
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3.
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7.
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Benzoic AcidList position (cm-1) & functional group
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4. 900 OH dimer
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1.
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5.
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2.
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6.
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3.
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7.
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