What absorbs at 3564 cm⁻¹ in an FTIR spectrum?
A band near 3564 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
Quick answer
A band near 3564 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 | 5 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| N 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 |
|---|---|---|---|
| hydroxyapatite | 3564, 1620, 1639 | Hydroxyl (O-H) | 1 |
| zeolite | 3564, 1013, 1245 | Hydroxyl (O-H), N h | 1 |
| olivine | 3564, 3525, 3600 | 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 3564 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
“3.3 Fourier Transform Infrared Spectroscopy at Lincoln] cm-1 In figure 1 for CS region at ~ 3564 is related to the absorption of axial stretching and cm-1 cm-1 OH stretching bands, NH overlapping;”
Qureshi 等 - 2015 - Ethyl acetate Salix alba leaves extract-loaded chi DOI: 10.1080/09205063.2015.1100843 -
信頼度 1.0
“The peaks at 3564 and 3522 may be associated with Ti-clinohumite-type point defects composition of MgTi[]O 2(OH) (Berry et al.”
De Hoog 等 - 2014 - Titaniumand water-rich metamorphic olivine in hi DOI: 10.1007/s00410-014-0990-x -
Hydroxyl (O-H) 信頼度 1.0
“The 4 cm-1 is prepared at different concentrations by serial dilution peak at 3564 is because of OH stretching of HAP.”
Sustained release of amoxicillin from hydroxyapatite nanocomposite for bone infections DOI: 10.1007/s40204-018-0103-4 -
Hydroxyl (O-H) 信頼度 1.0
“The zeolite also showed two distinctive bands at 3624 and 3564 cm-1 due to the presence of Al3+-OH in the octahedral sheet and to the octahedral Fe3+-OH, respectively [31,32].”
Assessing the Aflatoxin B1 Adsorption Capacity between Biosorbents Using an In Vitro Multicompartmental Model Simulating the Dynamic Conditions in the Gastrointestinal Tract of Poultry DOI: 10.3390/toxins10110484 -
Hydroxyl (O-H) 信頼度 0.8
“Peaks attributed to OH incorporation.”
Zhang 等 - 2017 - Mechanisms of Incorporation of Hydroxyl in Coesite DOI: 10.1166/jnn.2017.14519
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