What absorbs at 454 cm⁻¹ in an FTIR spectrum?
A band near 454 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 454 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) | 3 | 3 | 1.0 |
| Metal oxygen | 3 | 3 | 1.0 |
| Silicon (Si) | 1 | 1 | 1.0 |
| Alkyl C-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。
可能性のある材料
| 素材 | 補助ピーク | 重複グループ | 引用元 |
|---|---|---|---|
| polypropylene | 454, 1030, 1600 | Alkyl C-H | 1 |
| PP | 454, 1700, 1043 | Alkyl C-H | 1 |
| zirconia | 454, 1100, 460 | Metal oxygen, Silicon-oxygen (Si-O) | 1 |
| PVP | 454, 2983, 1648 | Alkyl C-H | 1 |
| pectin | 454, 1746, 1150 | Alkyl C-H | 1 |
| geopolymer | 454, 1453, 1000 | Silicon-oxygen (Si-O), Metal oxygen, Silicon (Si) | 1 |
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 454 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
-
Metal oxygen 信頼度 1.0
“FTIR analysis shows peaks at 590 cm and -1 454 cm -1, which are identified as the characteristic absorption bands of Zr-O and Al-O.”
Chandradass 和 Kim - 2009 - Effect of acidity on the citrate-nitrate combustio DOI: 10.1007/s12540-009-1039-y -
信頼度 1.0
“The absorption peak at 454 is due to Fe-O stretching by Fe-O and Fe-O bending by Fe-”
Mohammed 等 - 2019 - Structural, dielectric, and magneto-optical proper DOI: 10.1088/2053-1591/ab063b -
Silicon-oxygen (Si-O) 信頼度 1.0
“Elongation vibrations of the T-O bond (T=Si or Al) 475 [24,29] O-Si-O deformation vibrations 454 [12]”
The Influence of Substitution of Fly Ash with Marble Dust or Blast Furnace Slag on the Properties of the Alkali-Activated Geopolymer Paste DOI: 10.3390/coatings13020403 -
Alkyl C-H 信頼度 1.0
“The peaks at 1,454 cm-1 cm-1 -OH -CH 2,970 and 1,357 could be assigned to CH and bending indicate presence of stretching vibration peak 2 cm-1 1,420-1,460”
Mishra 等 - 2008 - Synthesis and characterization of pectinPVP hydro DOI: 10.1208/s12249-008-9048-6 -
Silicon (Si) 信頼度 1.0
“Peak at 454 and 515 are assigned to Si-O bending cm-1 and Al-O stretching vibrations respectively [20], Peak at 799 is assigned to 1 3 Polymer Bulletin (2022) 79:5587-5611”
Muralishwara 等 - 2022 - Moisture absorption and spectroscopic studies of e DOI: 10.1007/s00289-022-04200-7 -
信頼度 1.0
“cm-1 lattice vibration is associated with a sharp peak at 454 At 532 corresponds to the oxygen vaccines”
Microfluidic assisted low-temperature and speedy synthesis of TiO2/ZnO/GOx with bio/photo active cites for amoxicillin degradation DOI: 10.1038/s41598-022-19406-y -
信頼度 1.0
“Symmetric stretching of Si-O-Si was detected at 1067 cm-1, bending vibration of -OH in the silanol group at 800 cm-1 and rocking vibration of Si-O group at 454 cm-1 [29-31].”
Developing Post-Consumer Recycled Flexible Polypropylene and Fumed Silica-Based Nanocomposites with Improved Processability and Thermal Stability DOI: 10.3390/polym15051142 -
信頼度 0.9
“Explicit assignment in snippet.”
Bacterial Colonization on the Surface of Copper Sulfide Minerals Probed by Fourier Transform Infrared Micro-Spectroscopy DOI: 10.3390/cryst10111002
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