What absorbs at 636 cm⁻¹ in an FTIR spectrum?
A band near 636 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 7 cited sources
クイックアンサー
A band near 636 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 |
|---|---|---|---|
| Metal oxygen | 2 | 2 | 1.0 |
| Sulfonate | 1 | 1 | 1.0 |
| Fluorine (C-F) | 1 | 1 | 1.0 |
| Chlorine | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 0.7 |
| C c single bond | 1 | 1 | 0.7 |
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
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 636 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
-
信頼度 1.0
“additional Raman bands of C-Cl vibrations in the lower wavenumber region at 636 and 695 The bands cm-1 cm-1 around 1302 and 1437 were assigned to the methylene groups.”
Optical photothermal infrared spectroscopy with simultaneously acquired Raman spectroscopy for two-dimensional microplastic identification DOI: 10.1038/s41598-022-23318-2 -
Fluorine (C-F) 信頼度 1.0
“Minor bands at 636 and cm(cid:5)1 553 were observed and are assigned to the CF2 wagging and CF2 deformation modes, respectively.”
In vitro mineralisation of grafted ePTFE membranes carrying carboxylate groups DOI: 10.1016/j.bioactmat.2017.02.002 -
Metal oxygen 信頼度 1.0
“The region at 1107 9 cm1 is attributed to the absorption peak at 1467 antisymmetric stretching vibrations of the BO group, 3 m1 m1 and 484 are ascribed to the vibrations and 636 of the AlO polyhedral and lattice vibrations contained x 2θ”
Wang 等 - 2015 - A facile method to fabricate Al4B2O9 whiskers on p DOI: 10.1007/s40145-015-0154-0 -
Sulfonate 信頼度 1.0
“2 for the region between 1800 to 600 The band 636 attributed to of BMIMCF 2 3 0 2 3 symmetric deformation of the salt remained unshifted as concentration of BMIMCF 3SO added is increased SO 3 3”
Zulkepeli 等 - 2017 - Infrared Studies of PVC-based Electrolytes Incorpo DOI: 10.1063/1.4999880 -
Metal oxygen 信頼度 0.9
“band shift from 636.27 to 587.25 on MmGO”
Adsorptive and photocatalytic activity of Fe3O4-functionalized multilayer graphene oxide in the treatment of industrial textile wastewater DOI: 10.1007/s11356-020-10926-6 -
C c single bond 信頼度 0.7
“Text: 'The peaks at 636, cm¡1' followed by 'C-C bending modes of adsorbed water and stretching vibration'.”
Synthesized and magnetic and ferroelectric phase transitions of single phase multiferroic YMn2O5 nanoparticles through microwave assisted polyacrylamide gel method DOI: 10.1080/00150193.2017.1375302 -
信頼度 0.7
“Raman mode Eg of anatase.”
Zhao 和 Tay - 2006 - Study of nanocrystal TiO2 thin films by thermal an DOI: 10.1007/s10832-006-9903-3
このバンドを持つスペクトルがありますか？
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