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. 2020 Nov 1;23(11):101757. doi: 10.1016/j.isci.2020.101757

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.