| Wave number (cm−1) | functional group | compounds |
| 3007.92 | O-H stretching | alcohol (weak) |
| 2922.94 | C-H stretching | alkane (medium) |
| 2852.69 | C-H stretching | alkane (medium) |
| 1742.97 | C-H bending | aromatic compound (weak) |
| 1587.83 | N-H/C=C stretching | cyclic alkane (medium) |
| 1457.42 | N-O stretching | nitro compound (strong) |
| 1376.82 | O-H bending | alcohol (medium) |
| 1234.56 | C-O stretching | alkyl aryl ether (strong) |
| 1039.53 | C-N stretching | amine (medium) |
| 824.04 | C=C bending | alkene (medium) |