What absorbs at 3466 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 3466 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 8 cited sources
Quick answer
A band near 3466 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 |
|---|---|---|---|
| Hydroxyl (O-H) | 6 | 6 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 0,9 |
La clasificación refleja la evidencia acumulada de la literatura, no una única regla autorizada. Siempre confirme según el contexto de su muestra.
Possible materials
| Material | Supporting peaks | Overlapping groups | Fuentes citadas |
|---|---|---|---|
| SiO2 | 3466, 1739, 699 | Hydroxyl (O-H) | 1 |
| Quercetin | 3466, 1745, 1612 | Hydroxyl (O-H) | 1 |
| biodiesel | 3466, 858, 3470 | Hydroxyl (O-H) | 1 |
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 3466 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
-
Hydroxyl (O-H) confianza 1,0
“Peak at 3466 indicates the presence of OH functional group.”
Jon 等 - 2013 - Influence of silica addition on the properties of DOI: 10.1002/app.38997 -
Hydroxyl (O-H) confianza 1,0
“the OH stretching vibration, located at 3466 and 3578 Because of their very low intensity and superposition with cm(cid:4)1 These bands match the bands observed at 3466 and 3584”
Altnoeder 等 - 2013 - Chirality-dependent balance between hydrogen bondi DOI: 10.1039/c3cp50708d -
Hydroxyl (O-H) confianza 1,0
“The FTIR cm1 spectra show a broad peak in the region at 3466 corresponding to the hydroxyl (OH) stretching vibration Fig.”
Assaedi 等 - 2015 - Characterisation of mechanical and thermal propert DOI: 10.1007/s40145-015-0161-1 -
confianza 1,0
“The absorption band at cm-1 cm-1 3466 is related to N-H groups.”
Design and preparation of nanoarchitectonics of LDH/polymer composite with particular morphology as catalyst for green synthesis of imidazole derivatives DOI: 10.1038/s41598-022-15582-z -
Hydroxyl (O-H) confianza 1,0
“LLM confirmed rule peak-group candidate”
Kumar 等 - 2014 - Studies on carcinogenic PAHs emission generated by DOI: 10.2478/pjct-2014-0009 -
Hydroxyl (O-H) confianza 0,9
“Explicit assignment: 'broad peak at 3466 represents O-H stretch'.”
Naseem 等 - 2022 - Synthesis and Application of Cobalt-based Metal-or DOI: 10.15255/CABEQ.2021.1960 -
Hydrogen bond confianza 0,9
“Explicit assignment.”
Anti-Proliferative Potential of Quercetin Loaded Polymeric Mixed Micelles on Rat C6 and Human U87MG Glioma Cells DOI: 10.3390/pharmaceutics14081643 -
Hydroxyl (O-H) confianza 0,8
“-OH groups”
Adsorption of Polyelectrolyte onto Nanosilica Synthesized from Rice Husk: Characteristics, Mechanisms, and Application for Antibiotic Removal DOI: 10.3390/polym10020220
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