What absorbs at 3466 cm⁻¹ in an FTIR spectrum?
A band near 3466 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
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.
可能性のある官能基アサイン
| 官能基 | 裏付け事実 | 引用元 | 最高信頼度 |
|---|---|---|---|
| Hydroxyl (O-H) | 6 | 6 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 1 | 0.9 |
ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。
Possible materials
| 素材 | 補助ピーク | Overlapping groups | 引用元 |
|---|---|---|---|
| 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.
これらのアサインの根拠となる文献
-
Hydroxyl (O-H) 信頼度 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) 信頼度 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) 信頼度 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 -
信頼度 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) 信頼度 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) 信頼度 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 信頼度 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) 信頼度 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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