What absorbs at 1628 cm⁻¹ in an FTIR spectrum?
A band near 1628 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 8 cited sources
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| N h | 2 | 2 | 0,9 |
| Hydroxyl (O-H) | 2 | 2 | 0,9 |
| Protein beta sheet | 2 | 2 | 0,8 |
| Amide | 1 | 1 | 0,9 |
| C c single bond | 1 | 1 | 0,9 |
| Water (H2O) | 1 | 1 | 0,8 |
| Oxygen heterocycle | 1 | 1 | 0,8 |
| Alkene (C=C) | 1 | 1 | 0,8 |
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
-
N h confiance 0,9
“Explicit assignment: '1627.5 representing N-H bond'”
Ashfaq 等 - 2022 - Electro-Oxidation of Metal Oxide-Fabricated Graphi DOI: 10.3390/coatings12050548 -
Hydroxyl (O-H) confiance 0,9
“Explicitly stated: 'peaks around 1628 ... attributed to bending vibrations of O-H groups'.”
Aksoy 等 - 2022 - Characterization of perlite powders from Izmir, Tu DOI: 10.37190/ppmp/155277 -
C c single bond confiance 0,9
“Explicit assignment in text: ν(C-C).”
Belachew 等 - 2019 - Green syntheses of silver nanoparticle decorated r DOI: 10.1039/c9ra08536j -
confiance 0,9
“Peak at 1628 cm-1 assigned to cross-β structure.”
Chatani 等 - 2015 - Early aggregation preceding the nucleation of insu DOI: 10.1038/srep15485 -
confiance 0,9
“attributed to physically adsorbed H-O-H bonds”
Farahat 等 - 2022 - Superhydrophobic magnetic sorbent via surface modi DOI: 10.1038/s41598-022-15187-6 -
N h confiance 0,9
“Explicit assignment: 'vibration modes of amino group' at 1628 cm-1.”
Mi 等 - 2020 - Modification of Hydroxypropyltrimethyl Ammonium Ch DOI: 10.3390/polym12112460 -
Amide confiance 0,9
“Text: 'characteristic amide absorption bands at 1628 and 1536 cm-1' and 'Amide II band, near 1536 cm-1'”
Mohamed 等 - 2020 - Conservation and Characterization of Arabic Papyru DOI: 10.1088/1757-899X/949/1/012003 -
confiance 0,9
“Text: 'the peak at 1628 cm-1 ... characteristic active lattice vibration in the oxide'”
Zhang 等 - 2014 - Investigation of Adsorption Behavior of Cu2O Submi DOI: 10.1155/2014/619239
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