What absorbs at 868 cm⁻¹ in an FTIR spectrum?
A band near 868 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 868 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 |
|---|---|---|---|
| Carbonate | 2 | 2 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| N h | 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 |
| Nitrogen heterocycle | 1 | 1 | 1.0 |
| C c single bond | 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 |
|---|---|---|---|
| activated carbon | 868, 1575, 1210 | Alkyl C-H, Aromatic ring | 1 |
| CS | 868, 1645, 1720 | Alkyl C-H | 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 868 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
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C c single bond 信頼度 1.0
“cm-1) cm-1), cm-1).9, 10 CH stretching (954 and C-C vibration (868 -CHbending (754 and 1383 cm-1 The peak at 872 observed in all samples which is due to C-C stretching and featured for cm-1 amorphous properties of films.”
Ghosh 等 - 2020 - Blown films fabrication of poly lactic acid based DOI: 10.1016/j.mtcomm.2019.100737 -
信頼度 1.0
“In the FTIR analysis, a dominant peak at 868 wavenumbers Keywords: corresponding to the longitudinal optical (LO) mode of monoclinic TiO2phase was observed at 10% oxygen TiO2”
Structural and optical properties investigation of DC magnetron sputtered β-TiO2 thin film DOI: 10.1016/j.apsusc.2014.08.131 -
Carbonate 信頼度 1.0
“FTIR spectra establishes a particular Calcite - Zincite nano powder obtained the characteristic peak of carbonate group at 1414 cm-1, 868 cm-1 (CaCo3) and 477 cm-1 (ZnO).”
Kumar 等 - 2020 - Synthesis of calcite-zincite nano composite materi DOI: 10.1088/1757-899X/1003/1/012132 -
Nitrogen heterocycle 信頼度 1.0
“Moreover, a catalytic and the peaks at 1355 and 1523 correspond structure.16 effect was observed when alumina fillers were added, as shown to triazine ring in poly(triazine) The peaks at 868”
Tay 等 - 2022 - Simultaneous Enhancement of Polymerization Kinetic DOI: 10.1021/acsomega.2c02667 -
Acetate 信頼度 1.0
“The bands at about 1436 and 1728 are C=O to P-O bending (crystalline) and P-O bending (amorphous), associated with C-O (Stretch) and (Stretch) stretching cm-1 cm-1 band respectively, presence of C-O stretching at 868 modes, respectively, an”
Vyas 等 - 2016 - Effect of nickel oxide substitution on bioactivity DOI: 10.1007/s12034-016-1242-7 -
信頼度 1.0
“The new characteristic peaks at 3732 3672 32CO istic peaks of group in pure bastnaesite spectrum are 729 cm-1, 868 cm-1, 1087 cm-1 cm-1 and 3648 of bastnaesite treated with NHA are caused by the tensile vibration of N-H”
Selective Adsorption of 2-Hydroxy-3-Naphthalene Hydroxamic Acid on the Surface of Bastnaesite and Calcite DOI: 10.3390/min12111341 -
Aromatic ring 信頼度 1.0
“The peak of 868 cm-1 is assigned to the aromatic nucleus (C-H), and one adjacent H deformation.”
Zhao 等 - 2022 - Differences in Macromolecular Structure Evolution DOI: 10.3390/en15155334 -
信頼度 0.9
“Explicit assignment in text.”
Fabrication and Characterization of Activated Carbon from Phyllostachys edulis Using Single-Step KOH Activation with Different Temperatures DOI: 10.3390/pr10091712
このバンドを持つスペクトルがありますか？
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