Table 5.
FTIR frequencies interpretation table.
| Wavenumber (cm−1) | Origin | Assignment |
|---|---|---|
| 3357–3337 | -OH stretching | Alcohols |
| 2917 | C-H stretching (-CH3, -CH2 and -CH) | Aliphatic chains |
| 2849 | ||
| 1710 | -OH bending | Alcohols |
| 1605 | RONH2 | Amines |
| 1515 | C-N stretching | Amides |
| 1462 | C-H bending (-CH3, -CH2) | Aliphatic chains |
| 1423 | ||
| 1377 | ||
| 1328 | -CHO (CH deformation) | Aldehydes |
| 1269–1225 | NH2 rocking/twisting | Amines |
| 1169 | C-O asymmetric stretching | Alcohols |
| 1123 | N-H bending | Amines |
| 1051–1030 | C-O stretching | Alcohols |
| 833 | CH2 rocking | Aliphatic chains |
| 729 | Rotational deformation of CH2 in chain | High aliphatic chains |
| 719 |