What absorbs at 2006 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 2006 cm⁻¹ puede apuntar a varios grupos funcionales. A continuación se muestran las asignaciones más probables, clasificadas por cuánta evidencia publicada respalda cada una — cada una trazable a literatura (DOI) y validada de forma cruzada con nuestros más de 130,000 espectros de referencia y grafo de conocimiento.
Backed by 5 cited sources
Quick answer
A band near 2006 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| Ester | 3 | 2 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Protein alpha helix | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Protein beta turn | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
La clasificación refleja la evidencia acumulada de la literatura, no una única regla autorizada. Siempre confirme según el contexto de su muestra.
Possible materials
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 2006 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literatura detrás de estas asignaciones
-
Ester confianza 1,0
“14 1238 Esters Stretching vibration 2006).”
Zhao 等 - 2015 - Discrimination of Adulterated Sesame Oil Using Mid DOI: 10.1007/s12161-015-0125-7 -
Acetate confianza 1,0
“Produced with a Trial Version of PDF Annotator - www.PDFAnnotator.com New Myco-Composite Material Obtained with Fusarium oxysporum 1631cm-1 The bands situated at (C=O stretching, amide I of protein β-turns) (Hu et al., 1542cm-1 2006) and (N”
Iordache 等 - 2018 - FT-IR ANALYSIS OF FUSARIUM OXYSPORUM GROWN MYCO-CO DOI: 10.24264/icams-2018.VIII.8 -
Water (H2O) confianza 1,0
“This decrease is associated with the creation of a The porosity study of a hydrogel is important as the porous structure compact, less porous structure due to higher cross-linking leading to of a cross-linked hydrogel is responsible for the”
A novel pH-responsive hydrogel system based on Prunus armeniaca gum and acrylic acid: Preparation and evaluation as a potential candidate for controlled drug delivery DOI: 10.1016/j.ejps.2023.106555 -
confianza 1,0
“In the spectrum for reduced monometallic 2 cm-1 5%Pd/TiO catalyst, there are strong bands with a main maximum at 2006, 2082 and 2 cm-1.”
Samadi 等 - 2023 - Zn Modification of PdTiO2Ti Catalyst for CO Oxid DOI: 10.3390/ma16031216 -
Alkene (C=C) confianza 1,0
“3080-3010 =C-H stretching vibration (2006), Fresco-Rivera et al.”
Veerasingam 等 - 2020 - Spatial distribution, structural characterization DOI: 10.1016/j.marpolbul.2020.111486
¿Tiene un espectro con esta banda?
Cargue su espectro FTIR y obtenga un informe de interpretación completo — asignaciones de picos con citas bibliográficas, coincidencias de librerías y una cadena de evidencia con calificación de confianza — en segundos.