What absorbs at 1478 cm⁻¹ in an FTIR spectrum?
A band near 1478 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 1478 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 |
|---|---|---|---|
| Alkyl C-H | 8 | 8 | 1.0 |
| Amide | 4 | 4 | 1.0 |
| Secondary amine | 3 | 3 | 1.0 |
| C n single bond | 3 | 3 | 1.0 |
| Aromatic ring | 3 | 3 | 1.0 |
| N h | 2 | 2 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Methacrylate | 2 | 2 | 1.0 |
| C-O single bond | 2 | 2 | 1.0 |
| Acetate | 2 | 2 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Nitrogen heterocycle | 1 | 1 | 0.9 |
| N-O bond | 1 | 0 | 1.0 |
| Nitrate | 1 | 0 | 0.7 |
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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 1478 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
-
Alkyl C-H 信頼度 1.0
“Vibrational bands at 2935 cm-1 cm-1 and 2880 referred to a C-H stretching, 1478 to the CH bending of an alkyl”
Can 等 - 2023 - Choline Chloride-Based Deep Eutectic Solvent-Treat DOI: 10.3390/f14030569 -
Ester 信頼度 1.0
“appear at 1,560-1,520 The differential signal at e 1478 cm-1 1,725/1,719 is probably attributed to the 10a-ester”
Takano 等 - 2008 - Herbicide effect on the hydrogen-bonding interacti DOI: 10.1007/s11120-008-9302-5 -
C-O single bond 信頼度 1.0
“The ficient and variables and cm-1 represent -OH, C-OH and peaks at 1478, 1024 and 803 the interpretation of the experimental results are explained”
Bio-sorption of a bi-solute system of copper and lead ions onto banana peels: characterization and optimization DOI: 10.1007/s40201-021-00632-x -
Alkyl C-H 信頼度 1.0
“peaks of the C=C skeleton and C-H stretching vibration of CH2 and CH3 induced by arocm-1 However, several distinctive peaks at 1478, 2852, and 2922 were characteristic peaks matic groups of TC [46,47].”
Hanh 等 - 2023 - Adsorption of Tetracycline by Magnetic Mesoporous DOI: 10.3390/su15064727 -
Aromatic ring 信頼度 1.0
“cm-1 is related to the N=Q=N stretching cated at 1560 vibration in the quinoid structure, and the peak at cm-1 1478 corresponds to the N=B=N vibration of the benzenoid structure.”
He 等 - 2020 - Flexible fabric gas sensors based on PANIWO(3)p-n DOI: 10.1007/s40843-020-1364-4 -
Aromatic ring 信頼度 1.0
“cm-1 Aromatic C-C stretching Vibration of benzene: 1465-1490 cm-1 The aromatic C-C vibration of benzene shows a peak at 1478.24 with a transmittance of 80.26% (Fig.14) and shows a small shift toward a higher wavenumber with an increasing mo”
Hema 等 - 2022 - Structural and vibrational study of molecular inte DOI: 10.21203/rs.3.rs-649250/v1 -
Aromatic ring 信頼度 1.0
“The weight loss of 12.7%, between 30 and 350 is (C]C vibrations at about 1478 aromatic stretching) and about attributed to physically adsorbed water and the alkyl thiol Access cm(cid:1)1 (C-H 875 aromatic out-of-plane), due to the presence”
Synthesis and characterization of a new reusable calix[4]arene-bonded silica gel sorbent for antidiabetic drugs DOI: 10.1039/d2ra04530c -
Alkyl C-H 信頼度 1.0
“This]CHregionisclearlyshowninFigure4(a).Beeswax shellac wax shows an additional well-defined narrow C=O and band (acids/ketones) with the maximum being positioned at shellac wax spectra show two close narrow maxima both of 1735cm-1 CH2 scis”
Invernizzi 等 - 2018 - Mid and Near-Infrared Reflection Spectral Database DOI: 10.1155/2018/7823248
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