| Functional group | Bond | Wavenumber (frequency) cm−1 |
| Alcohols and phenols | O-H stretching | 3500-3200 |
| Alkanes | C-H stretching | 3000-2850 |
| General carbonyls | C=O stretching | 1760-1665 |
| Carboxylic acids | C=O stretching | 1760-1769 |
| Esters and others | C-OH stretching | 1320-1000 |