What absorbs at 2938 cm⁻¹ in an FTIR spectrum?
A band near 2938 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
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| Alkyl C-H | 6 | 5 | 1,0 |
| Lignin | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 0,8 |
La clasificación refleja la evidencia acumulada de la literatura, no una única regla autorizada. Siempre confirme según el contexto de su muestra.
Literatura detrás de estas asignaciones
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Lignin confianza 1,0
“While, combination 21 is rich in S/G type lignin as cm-1 to produce mediators such as N-heterocyclic and aromatic comfrom its high intensity S type lignin peaks at 2938 observed”
Avanthi 和 Banerjee - 2016 - A strategic laccase mediated lignin degradation of DOI: 10.1016/j.indcrop.2016.08.009 -
Alkyl C-H confianza 1,0
“Peak area of -CH asymmetric stretching of TESPT at 2938 cm-1 increased.”
Ryu 等 - 2013 - Modification of Silica Nanoparticles with Bis[3-(t DOI: 10.7317/pk.2013.37.3.308 -
Alkyl C-H confianza 1,0
“Peak at 2938 cm-1 attributed to methylene C-H stretching.”
Sireesha 等 - 2015 - Biocompatible and biodegradable elastomerfibrinog DOI: 10.1039/c5ra20322h -
Alkyl C-H confianza 0,9
“stretching vibrations”
Baharom 等 - 2023 - High linoleic waste sunflower oil A distinctive r DOI: 10.1016/j.heliyon.2023.e15364 -
confianza 0,9
“Explicit assignment in text: 2938 (w, υ CH2)”
Li 等 - 2013 - Crystal Structures and Antifungal Activities of Fl DOI: 10.3390/molecules181215737 -
Hydroxyl (O-H) confianza 0,8
“Listed in table as O-H group.”
Zhou 等 - 2021 - Effect of aluminum stress on the quality of Entero DOI: 10.1093/fqsafe/fyaa037 -
Alkyl C-H confianza 0,8
“Peak at 2937.82 cm-1 corresponds to C-H bond as per text.”
Begam 等 - 2022 - Adsorption isotherm and kinetic studies for the de DOI: 10.30955/gnj.004266 -
Alkyl C-H confianza 0,8
“Text: 'split into two distinct bands at 2938 and 2870 cm-1' assigned to aliphatic groups.”
Pieklarz 等 - 2021 - Physico-Chemical Properties and Biocompatibility o DOI: 10.3390/jfb12020037
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