What absorbs at 2010 cm⁻¹ in an FTIR spectrum?
A band near 2010 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 2010 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 | 3 | 2 | 1.0 |
| Adsorbed carbon monoxide | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Nitrile | 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 |
| N h | 1 | 1 | 1.0 |
| Silicon hydride | 1 | 1 | 0.5 |
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 |
|---|---|---|---|
| lignin | 2010, 1035, 1510 | Alkyl C-H | 1 |
| CO | 2010, 1670, 1620 | Adsorbed carbon monoxide, 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 2010 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
“The bands located at ~2890 ~2010 cm-1 cm-1 and ~1640 are due to the stretching vibration of C-H, and CH groups, associated”
Oxygen vacancies and F+ centre tailored room temperature ferromagnetic properties of CeO2 nanoparticles with Pr doping concentrations and annealing in hydrogen environment DOI: 10.1016/j.jallcom.2020.156079 -
信頼度 1.0
“medium without fungi showed a strong peak broadening at cm-1, 3,270-3,335 indicating the overlap of N-H and O-Hrelated peaks (Oprea, 2010).”
Khruengsai 等 - 2022 - Biodegradation of Polyester Polyurethane by Embarr DOI: 10.3389/fmicb.2022.874842 -
C c single bond 信頼度 1.0
“1 illustrates the multispectrum fit region from 2010 moment for the vibrational band and is the non-rigid rotor FZ[1Cc cmK1 2m2Cc 3m3)], 1mCc c c to 2250 factor defined by where 1, covering both the P and R branch lines (in our 2 0Z”
Mantz 等 - 2005 - A multispectrum analysis of widths and shifts in t DOI: 10.1016/j.molstruc.2004.11.094 -
C c single bond 信頼度 1.0
“Appearance of new peaks at cm(cid:3)1 due to C-C appearance of shoulder peak at 2010 cm(cid:3)1 and disappearance of peaks at 2010, 767 and 1556 stretching of PEO.”
Influence of high and low dielectric constant plasticizers on the ion transport properties of PEO: NH4HF2 polymer electrolytes DOI: 10.1177/0954008319894043 -
Adsorbed carbon monoxide 信頼度 1.0
“The intensity of the 2010 band increases after annealing the sample to 165 K and concomitant desorption of part of the adsorbed CO.”
Abbet 等 - 2001 - Identification of defect sites on MgO(100) thin fi DOI: 10.1021/ja0157651 -
信頼度 1.0
“This band shows a shoulder at 2010 assigned by Bazin et al.”
Upgrading the PtCu intermetallic compounds: The role of Pt and Cu in the alloy DOI: 10.1016/j.cattod.2019.11.026 -
信頼度 1.0
“Deformation of the C-H linkages in the methyl group of O-acetyl moieties Hemicellulose (Mohebby, 2010) 1230-1235 C=O/C-O linkages stretching vibrations (Mohebby, 2010) Hemicellulose”
Dinant 等 - 2019 - Synchrotron FTIR and Raman spectroscopy provide un DOI: 10.1093/jxb/ery396 -
Nitrile 信頼度 1.0
“One can also notice that the C 2H tal columns, respectively, as measured by IASI and averaged 2 and HCN peaks are higher in 2010.”
Duflot 等 - 2015 - Acetylene (C2H2) and hydrogen cyanide (HCN) from I DOI: 10.5194/acp-15-10509-2015
このバンドを持つスペクトルがありますか？
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