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| S. No | Peak (cm−1) | Functional group |
|---|---|---|
| 1 | 3505 | O–H stretch, alcohols |
| 2 | 3417 | O–H stretch, H-bonded alcohols, phenols |
| 3 | 2922 | C–H stretch, alkanes |
| 4 | 2852 | C–H stretch, alkanes |
| 5 | 2089 | C C terminal alkynes |
| 6 | 1629 | C C stretch (conjugated), alkenes |
| 7 | 1383 | C–F stretch, alkyl halides |
| 8 | 1113 | C–C stretch, ketones |
| 9 | 781 | C–H bend (mono), aromatics |
| 10 | 619 | Acetylenic C–H bend, alkynes |
| 11 | 508 | C–X bromoalkanes |
