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Step 1:I'll solve this problem step by step, focusing on labeling the IR spectrum of benzil.
Step 2:: Understand Benzil's Structure
Benzil is an organic compound with the molecular formula $$\mathrm{C}_{14}\mathrm{H}_{10}\mathrm{O}_{2}$$.
It contains two ketone groups connected by a benzene ring.
Step 3:: Key Functional Groups in Benzil
The primary functional groups in benzil are: - Two ketone (C=O) groups - Aromatic ring structure
Step 4:: Characteristic IR Absorption Peaks
The expected IR spectrum will show peaks for:
Step 5:
\nu_{\mathrm{C}=\mathrm{O}}: 1680 - 1700 \mathrm{~cm}^{-1}
C=O Stretch (Ketone)
Step 6:
\nu_{\mathrm{C-H}}: 3030 - 3100 \mathrm{~cm}^{-1}
Aromatic C-H Stretch
Step 7:
\nu_{\mathrm{Ring}}: 1450 - 1600 \mathrm{~cm}^{-1}
Aromatic Ring Vibrations
Final Answer
Benzil IR Spectrum Key Peaks: - 1690 \mathrm{~cm}^{- 1}: Strong C=O ketone stretch - 3050 \mathrm{~cm}^{- 1}: Aromatic C-H stretch - 1500 \mathrm{~cm}^{- 1}: Aromatic ring vibrations
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