What absorbs at 866 cm⁻¹ in an FTIR spectrum?
A band near 866 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 866 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 |
|---|---|---|---|
| Methoxy (OCH3) | 3 | 3 | 1.0 |
| Methacrylate | 3 | 3 | 1.0 |
| C-O single bond | 3 | 3 | 1.0 |
| Acetate | 3 | 3 | 1.0 |
| Carbonate | 2 | 2 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 0.9 |
| Hydroxyl (O-H) | 1 | 1 | 0.8 |
| Alkyl C-H | 1 | 0 | 1.0 |
| Carboxyl (COOH) | 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
| 素材 | 補助ピーク | 重複グループ | 引用元 |
|---|---|---|---|
| starch | 866, 1650, 1540 | Methacrylate, Acetate, C-O single bond | 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 866 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
-
Acetate 信頼度 1.0
“The 5 mL freshly obtained hepused corresponds to C O C stretching vibrations from gly866”
Shahid 等 - 2013 - Graft polymerization of guar gum with acryl amide DOI: 10.1016/j.ijbiomac.2013.08.018 -
Carbonate 信頼度 1.0
“The peak at 866 (labeled 3 in Fig, 4I) has been attributed to either Aor B - type carbonate with slightly different orientation, A u”
Carbonate substitution in the mineral component of bone: Discriminating the structural changes, simultaneously imposed by carbonate in A and B sites of apatite DOI: 10.1016/j.jssc.2017.07.025. -
Acetate 信頼度 1.0
“cm-1: bands: peaks below 800 skeletal vibrations of the fructose and OH bending of water, 2929 C-H stretching of inulin, 1654 cm-1: glutenandinulin,3433cm-1:N-HstretchingofglutenandOHstretching glucose pyranose rings, 866 stretching of C-O-”
Pourfarzad 等 - 2015 - Serish inulin and wheat biopolymers interactions i DOI: 10.1007/s13197-015-1939-4 -
Amide 信頼度 1.0
“CLH melting peak was depleted in the thermogram for the cm-1, cm-1 cm-1 1086 (C-N stretching), 866 and bending), 1183 drug loaded PLA and PLGA NPs, indicating the presence of cm-1 (N-H wags) for the CLH-PLGA 2 NPs.”
Enhanced efficacy of clindamycin hydrochloride encapsulated in PLA/PLGA based nanoparticle system for oral delivery DOI: 10.1049/iet-nbt.2015.0021 -
Acetate 信頼度 1.0
“The third experiment, a new culture of the strain was prepared, and cm-1 peak with wavelength is 865.61 related to C-O.”
Shakeri 等 - 2022 - Biosynthesis of Selenium Nanoparticles and Evaluat DOI: 10.1155/2022/4118048 -
Silicon-oxygen (Si-O) 信頼度 1.0
“Additional cm-1 cm-1 of SiO4, symmetric stretching of ZnO4, asymmetric stretching of ZnO4, and Si-O bond vibration, IR spectra at 866 are attributed to symmetric stretching of SiO 4, and 900, 930 and 977 as”
Phase Transformation, Optical and Emission Performance of Zinc Silicate Glass-Ceramics Phosphor Derived from the ZnO–B2O3–SLS Glass System DOI: 10.3390/app10144940 -
Aromatic ring 信頼度 1.0
“benzene ring stretching vibration are 866 and 809 Combined with the analysis of the infrared spectrum of L-DMA in Figure 6, it can be inferred that the modification process of L-DMA on asphalt is mainly a physical modification process.”
Bionic Synthesis of Mussel-like Adhesive L-DMA and Its Effects on Asphalt Properties DOI: 10.3390/ma15155351 -
信頼度 0.9
“Text: 'two symmetric stretching vibration peaks of the BO anion at 866 and 912cm-1'.”
Zhang 等 - 2008 - Infrared spectra and luminescence properties of (Y DOI: 10.1016/j.jallcom.2007.01.010
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