What absorbs at 3318 cm⁻¹ in an FTIR spectrum?
A band near 3318 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 7 cited sources
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| N h | 3 | 3 | 0,9 |
| Hydroxyl (O-H) | 2 | 2 | 0,95 |
| Amide | 1 | 1 | 0,8 |
| Alkyl C-H | 1 | 1 | 0,5 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Bibliographie derrière ces attributions
-
Hydroxyl (O-H) confiance 0,95
“Text: 'cm-1 about 3318 attributed to the presence of bonded hydroxyl groups'”
Nchoe 等 - 2020 - Synthesis, characterization, and application of be DOI: 10.1016/j.molliq.2019.111991 -
confiance 0,95
“Same as above.”
Jadhav 等 - 2017 - Thermoresponsive copolymer-grafted SBA-15 porous s DOI: 10.3144/expresspolymlett.2017.11 -
N h confiance 0,9
“Characteristic peak of N-H”
Alhendi 等 - 2022 - Structural Conformation Comparison of Different Cl DOI: 10.3390/dj10050073 -
Hydroxyl (O-H) confiance 0,9
“Assigned to O-H stretching.”
Farmoudeh 等 - 2020 - Solid Dispersion Pellets An Efficient Pharmaceuti DOI: 10.1155/2020/8583540 -
N h confiance 0,9
“Explicit assignment in text: 'The peak at 3318 represents an N-H stretch'”
Ikram 等 - 2022 - Biodegradation of Azo Dye Methyl Red by Pseudomona DOI: 10.3390/ijerph19169962 -
Amide confiance 0,8
“Text: 'WB1, WB3 and WB5, were 3318.17, 3306.23 and Amide-A, from wagging vibrations from CH 3307.64, respectively. which represents NH- groups from'”
Tu 等 - 2015 - Physico-chemical properties of gelatin from bighea DOI: 10.1007/s13197-013-1239-9 -
confiance 0,5
“Text: 'the entire band at 3317.67 powder stays (-CH attributed. The strength of the 2) corresponding' but assignment unclear; groups inferred from context.”
Naser 等 - 2021 - Organic pollutants removal from oilfield produced DOI: 10.30955/gnj.003875
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