What absorbs at 426 cm⁻¹ in an FTIR spectrum?
A band near 426 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 6 cited sources
Quick answer
A band near 426 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 |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
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 |
|---|---|---|---|
| pectin | 426, 1746, 1150 | Hydroxyl (O-H) | 1 |
| Zinc Oxide | 426, 1627, 1638 | Metal oxygen | 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 426 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
-
信頼度 1.0
“The peaks at 426 and 743 appeared only for FHO, which was assigned to the Fe-O-Fe stretching vibration [24] and would be the Fe-OH band, respectively [25].”
Kim 等 - 2019 - The Application of Alginate Coated Iron Hydroxide DOI: 10.3390/app9183835 -
Water (H2O) 信頼度 1.0
“First peak reflects slightly 426 bound water loss and second peak evinces degradation of polymeric structure (Giancone et al., 2011).”
Evaluation of structural integrity and functionality of commercial pectin based edible films incorporated with corn flour, beetroot, orange peel, muesli and rice flour DOI: 10.1016/j.foodhyd.2019.01.022 -
信頼度 1.0
“Further addition of new peaks at 613 and 426 cm-1 strongly revealed the growth of inorganic particles (due to (a.u.) Fe-O vibrations) on the NSS surface.”
Facile Synthesis of Magnetic Nigella Sativa Seeds: Advances on Nano-Formulation Approaches for Delivering Antioxidants and Their Antifungal Activity against Candida albicans DOI: 10.3390/pharmaceutics15020642 -
Metal oxygen 信頼度 1.0
“spectra of the deposited ZnO Characteristic cm-1 Zn-O peaks at 426 are related to stretching vibration and vibration-phonon mode E (transversal optic) also, a 1 cm-1 Zn-O is attributed to the stretching second peak at 490 reports.19-21 vibr”
Salinas Dominguez 等 - 2020 - Antibody Immobilization in Zinc Oxide Thin Films a DOI: 10.1021/acsomega.0c02583 -
信頼度 1.0
“4 cm-1 νCu(II)-O 426.0 is assigned to the stretching vibrations of copper oxide CuO [25].”
Silva 等 - 2021 - Potential Production of Theranostic Boron Nitride DOI: 10.3390/nano11112907 -
信頼度 0.9
“Peak assigned to Si-O-Si rocking.”
Mahisagar 等 - 2012 - Deposition of porous low-k thin films using Tween DOI: 10.1117/12.927332
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