Table 1.
Main Ammonia-Related Vibrations Presented in Stretching Modes Spectral Region
| Formation | Spectral Position | Intensity | Assignment |
|---|---|---|---|
| NH3 | 3,409.0 cm−1 | 36.8 | NH asymmetric stretching |
| 3,309.8 cm−1 | 155.8 | NH symmetric stretching | |
| NH4+ | 3,380.0 cm−1 | 16.8 | NH asymmetric stretching |
| 3,276.8 cm−1 | 101.0 | NH symmetric stretching | |
| NH3-NH3 | 3,441.0 cm−1 | 76.2 | NH asymmetric stretching |
| 3,438.0 cm−1 | 7.8 | NH asymmetric stretching | |
| 3,402.3 cm−1 | 48.2 | NH asymmetric stretching | |
| 3,369.5 cm−1 | 15.6 | NH asymmetric stretching | |
| 3,315.4 cm−1 | 341.6 | NH symmetric stretching | |
| NH3-H2O | 3,545.6 cm−1 | 175.0 | OH stretching (H-bonded) |
| 3,410.9 cm−1 | 35.3 | NH asymmetric stretching | |
| 3,389.2 cm−1 | 33.0 | NH asymmetric stretching | |
| 3,305.0 cm−1 | 155.31 | NH symmetric stretching |
For full mode list, please, see Table S1.