Table 4. Fundamental Transitions (in cm–1) and Infrared Intensities (in kilometers/mol) of Formamide.
| # | Sym | Expa | Expb | VCI | IR |
|---|---|---|---|---|---|
| ν1 | a′ | 3563.5 | 3563.7 | 3569.0 | 14.7 |
| ν2 | 3439.3 | 3439.5 | 3442.6 | 11.3 | |
| ν3 | 2853.6 | 2853.6 | 2853.5 | 59.9 | |
| ν4 | 1754.1 | 1754.1 | 1757.5 | 341.9 | |
| ν5 | 1576.9 | 1578.9 | 1578.1 | 43.5 | |
| ν6 | 1390.2 | 1390.7 | 1391.1 | 3.7 | |
| ν7 | 1258.2 | 1258.2 | 1257.7 | 92.3 | |
| ν8 | 1045.6 | 1045.7 | 1041.0 | 7.7 | |
| ν9 | 581 | 565.8 | 562.0 | 11.5 | |
| ν10 | a″ | 1021.2 | 1033.3 | 1023.6 | 2.5 |
| ν11 | 602.8 | 602.4 | 596.9 | 16.8 | |
| ν12 | 288.7 | 289.0 | 286.8 | 174.9 |