What absorbs at 472 cm⁻¹ in an FTIR spectrum?
A band near 472 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
クイックアンサー
A band near 472 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 |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 4 | 3 | 1.0 |
| Phosphate (PO4) | 3 | 3 | 1.0 |
| Silicon (Si) | 3 | 2 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1.0 |
| Silanol (Si-OH) | 1 | 1 | 1.0 |
| S s | 1 | 1 | 1.0 |
| Silicate | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Amide | 1 | 0 | 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。
可能性のある材料
同じ文献プールがこのバンドと少なくとも1つの追加の特性ピークをサポートする場合にのみ、材料が表示されます。
スペクトルロジック
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 472 cm⁻¹ is usually not enough for material identification by itself.
実使用例
この種のクエリは、ポリマー識別、未知のプラスチックスクリーニング、QCトラブルシューティング、リサイクル材料の検証、および文献に基づいたピーク帰属のレビューで一般的です。
よくある間違い
- 少なくとも1～2つの支持ピークを確認せずに、1つの孤立したバンドを材料の証拠として扱うこと。
- 重複を無視: 複数の官能基が同じ波数付近に寄与することがあります。
- 添加剤、ブレンド、酸化、または汚染がスペクトルを歪める可能性がある場合に検証を省略すること。
検証アドバイス
曖昧さが残る場合は、特にブレンド、劣化サンプル、充填ポリマーについて、DSC、GC-MS、またはTGAで仮説を検証してください。
これらのアサインの根拠となる文献
-
信頼度 1.0
“Si-O-Si symmetric vibration Si-O-Si 472 471 Si-O-Si bending vibration unmodified surface-modified Table 5: DLS of the and silica”
Ganie 等 - 2020 - Synthesis and Characterization of a New Surface-Mo DOI: 10.1155/2020/8814260 -
Acetate 信頼度 1.0
“A (cm-1) 472 and stretching vibration of Stretching vibration of methyl group (-CH) at ~2930 (cm-1) M 473 carboxyl (C-O-C) group at ~1030 and ~1250 were also observed.”
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 -
Silicon (Si) 信頼度 1.0
“cm-1 observed at 472 was due to the stretching vibration of gel was suction filtered, washed thoroughly with distilled cm-1 the Si-O-Si bond.”
Adam 等 - 2012 - Liquid Phase Oxidation of Acetophenone over Rice H DOI: 10.1016/S1872-2067(11)60361-6 -
Phosphate (PO4) 信頼度 1.0
“cm-1 PO43originate from ions, The bands located at 472.474, 568.798, 601.682, 1039.44 and 1091.51 and are weaker than the strong P-O stretching vibration due to HA stoichiometry.”
Evaluation Of Mechanical and Biocompatibility Properties of Hydroxyapatite/Manganese Dioxide Nanocomposite Scaffolds for Bone Tissue Engineering Application DOI: 10.1016/B978-0-12-816909-4.00008-7 -
Silicate 信頼度 1.0
“The vibration band appearing at 472 cm-1 is assigned to deformation vibrations of silicate tetrahedrons, ν4 (O-Si-O), which becomes better defined after the heat treatment of OxGC (red plot).”
Novel Sol-Gel Route to Prepare Eu3+-Doped 80SiO2-20NaGdF4 Oxyfluoride Glass-Ceramic for Photonic Device Applications DOI: 10.3390/nano13050940 -
Alkyl C-H 信頼度 1.0
“and Acetic 19◦ Ch XRD analysis revealed sharper peaks at (471.59 counts/s and 415.96 counts/s, Lactic”
Physicochemical Properties and Functional Characteristics of Ecologically Extracted Shrimp Chitosans with Different Organic Acids during Demineralization Step DOI: 10.3390/molecules27238285 -
信頼度 1.0
“presence of iron-based and lead-based pigments, whereas in sample 4 the SEM-EDS results led us to Sample 1, whose main bands stand at 1032, 1007, 532 and 472 cm-1 (Figure 4a), shows the features think that it was basically composed of iron”
Pigments on Roman Wall Painting and Stucco Fragments from the Monte d’Oro Area (Rome): A Multi-Technique Approach DOI: 10.3390/app10207121 -
Silicon-oxygen (Si-O) 信頼度 1.0
“Explicit assignment: band at 472 per cm related to Si-O-Al.”
Desulfurization of liquid fuels using aluminum modified mesoporous adsorbent: towards experimental and kinetic investigations DOI: 10.1038/s41598-021-88439-6
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