What absorbs at 1633 cm⁻¹ in an FTIR spectrum?
A band near 1633 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
Mulige funksjonelle gruppe-tilordninger
| Funksjonell gruppe | Støttende fakta | Siterte kilder | Toppkonfidens |
|---|---|---|---|
| Hydroxyl (O-H) | 8 | 8 | 1.0 |
| Carbonyl (C=O) | 6 | 6 | 1.0 |
| Water (H2O) | 6 | 6 | 0.9 |
| Alkene (C=C) | 4 | 4 | 1.0 |
| Amide | 4 | 2 | 0.9 |
| Protein beta sheet | 3 | 2 | 0.95 |
| Aromatic ring | 2 | 2 | 0.9 |
| Acetyl | 1 | 1 | 0.9 |
| Carbohydrate | 1 | 1 | 0.9 |
| Metal hydroxyl | 1 | 1 | 0.9 |
| Amino acid | 1 | 1 | 0.8 |
| Carboxyl (COOH) | 1 | 0 | 0.95 |
| Alkyl C-H | 1 | 0 | 0.9 |
Rangeringen gjenspeiler akkumulert litteraturbevis, ikke en enkelt autoritativ regel. Bekreft alltid mot prøvekonteksten din.
Litteratur bak disse tilordningene
-
Hydroxyl (O-H) konfidens 1.0
“bending band of surface hydroxyl group”
Farzin 等 - 2020 - Low-temperature synthesis of Sr2FeMoO6 double pero DOI: 10.1016/j.ceramint.2020.03.264 -
Alkene (C=C) konfidens 1.0
“Explicitly assigned to unsaturation (C=C).”
Chaparro 等 - 2023 - Biowaxes from Palm Oil as Promising Candidates for DOI: 10.3390/ma16124402 -
Carbonyl (C=O) konfidens 1.0
“Text: 'stretching vibration of C=O (1633'”
Goyal 等 - 2019 - Hetero-Polysaccharides Secreted from Dunaliella sa DOI: 10.1007/s12088-019-00818-w -
Protein beta sheet konfidens 0.95
“Explicit assignment in text: 'β-sheets at 1633 cm-1'”
Vorob'ev 等 - 2023 - Proteolysis of Micellar beta-Casein by Trypsin Se DOI: 10.3390/ijms24043874 -
Hydroxyl (O-H) konfidens 0.9
“Explicit assignment: OH bending peak of water.”
Tabak 等 - 2011 - Structural analysis of naproxen-intercalated bento DOI: 10.1016/j.cej.2011.09.027 -
Hydroxyl (O-H) konfidens 0.9
“Explicit assignment: O-H bending vibration peak”
Veerasingam 等 - 2020 - Ionic liquid mediated morphologically improved lan DOI: 10.1016/j.jre.2019.06.006 -
Metal hydroxyl konfidens 0.9
“Peak assigned to Ti-OH stretching vibration.”
Wang 等 - 2018 - Coloration and Decoloration of Textiles Using a Ti DOI: 10.1007/s12221-018-1134-0 -
Aromatic ring konfidens 0.9
“Peak enhanced due to increase in aromatic carbon and decreased cellulose.”
Xu 等 - 2019 - Co-pyrolysis of rice straw and water hyacinth Cha DOI: 10.1016/j.biombioe.2019.105281
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