What absorbs at 2888 cm⁻¹ in an FTIR spectrum?
A band near 2888 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 5 cited sources
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| Alkyl C-H | 2 | 2 | 0,9 |
| Carboxyl (COOH) | 1 | 1 | 0,8 |
| Methyl | 1 | 1 | 0,8 |
| C-O single bond | 1 | 1 | 0,6 |
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
-
Alkyl C-H confianza 0,9
“Same as above.”
Chrzan 等 - 2019 - Towards Methane Combustion Mechanism on Metal Oxid DOI: 10.1007/s11244-019-01143-8 -
Alkyl C-H confianza 0,9
“Text states ~2888 (C-H stretch).”
Shariare 等 - 2021 - Preparation and Optimization of PEGylated Nano Gra DOI: 10.3390/molecules26051457 -
Methyl confianza 0,8
“Text: 'CH3 are assigned to very strong band at 2888 cm-1 in Raman spectra.' Note: Raman, not FTIR, but included as cited peak.”
Samuel 和 Mohan - 2004 - FTIR and FT Raman spectra and analysis of poly(4-m DOI: 10.1016/S1386-1425(03)00212-9 -
Carboxyl (COOH) confianza 0,8
“carboxyl group vibration”
Wang 和 Lin - 2005 - Reactions of trimethylindium on TiO2 nanoparticles DOI: 10.1021/jp050892v -
C-O single bond confianza 0,6
“Text: 'IR peaks at 2888 c' (incomplete, but context suggests C-C-O stretches)”
Tan 等 - 2016 - In vitro drug release characteristic and cytotoxic DOI: 10.1186/s13065-016-0228-2
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