What absorbs at 2950 cm⁻¹ in an FTIR spectrum?
A band near 2950 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 |
|---|---|---|---|
| Alkyl C-H | 26 | 26 | 1,0 |
| Hydroxyl (O-H) | 3 | 3 | 0,95 |
| Methyl | 3 | 3 | 0,9 |
| Amide | 1 | 1 | 0,9 |
| Aromatic ring | 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
-
Alkyl C-H confiance 1,0
“Explicit assignment in text.”
Chourasiya 等 - 2021 - Formulation, optimization, and characterization of DOI: 10.1177/09673911211056154 -
Alkyl C-H confiance 1,0
“Explicit assignment: 'C-H (2950 cm-1)'.”
Liang 等 - 2018 - Degradation of Polyacrylate in the Outdoor Agricul DOI: 10.3390/polym10121296 -
Alkyl C-H confiance 1,0
“stretching”
Medeiros 等 - 2023 - Poly(butylene adipate-co-terephthalate)Poly(lacti DOI: 10.3390/polym15030762 -
Alkyl C-H confiance 1,0
“explicit assignment in text”
Nath 等 - 2021 - A novel double-side welding approach for friction DOI: 10.1007/s00170-021-06602-9 -
Alkyl C-H confiance 1,0
“Explicit assignment in text.”
Sikora 等 - 2021 - Surface modification of PMMA polymer and its compo DOI: 10.1038/s41598-021-88553-5 -
Hydroxyl (O-H) confiance 0,95
“Text: 'band at approximately 2950 ... hydroxyl functional groups'”
Du 等 - 2016 - Microwave-assisted preparation of almond shell-bas DOI: 10.1515/gps-2016-0032 -
Alkyl C-H confiance 0,95
“Explicit assignment: 'C-H' at 2950 cm-1.”
Ngo 等 - 2020 - Improvement of Hydrophilicity for Polyamide Compos DOI: 10.1155/2020/6641225 -
confiance 0,95
“Explicit assignment in text: 'peak of at 2950-2850 cm-1 (C-H alcane stretching)'”
Wang 等 - 2020 - Study of the Effect of PGDA Solvent on Film Format DOI: 10.3390/coatings10050461
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