What absorbs at 2500 cm⁻¹ in an FTIR spectrum?
A band near 2500 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
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 |
|---|---|---|---|
| Hydroxyl (O-H) | 9 | 8 | 0.9 |
| Carboxyl (COOH) | 1 | 1 | 0.9 |
| Alkyl C-H | 1 | 1 | 0.8 |
| Thiol | 1 | 0 | 0.8 |
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。
これらのアサインの根拠となる文献
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信頼度 1.0
“Text: 'D2O stretching band at ~2500'.”
Liu 等 - 2021 - Fourier transform infrared spectroscopy coupled wi DOI: 10.1038/s41598-021-91802-2 -
Hydroxyl (O-H) 信頼度 0.9
“Explicit assignment in text.”
Bushra 等 - 2013 - Microwave assisted acetylation of mung bean starch DOI: 10.1002/star.201200081 -
Hydroxyl (O-H) 信頼度 0.9
“Text: '2500 band representing O-H'”
Abu Bakar 等 - 2014 - Metabolic Fingerprinting of Lichen Usnea baileyi b DOI: 10.1063/1.4895239 -
Hydroxyl (O-H) 信頼度 0.9
“Explicit assignment in text: '2500 cm-1 (O-D stretch)'”
Efremov 等 - 2006 - Time-resolved microspectroscopy on a single crysta DOI: 10.1529/biophysj.106.083345 -
Hydroxyl (O-H) 信頼度 0.9
“Text: 'broad absorptions around ... 2500 correspond to the ... O-D stretch'”
Futscher 等 - 2017 - The Role of Backbone Hydration of Poly(N-isopropyl DOI: 10.1038/s41598-017-17272-7 -
Carboxyl (COOH) 信頼度 0.9
“broad peak at 2500-3500 cm-1 corresponds to carboxylic acid groups”
Khodaei 等 - 2018 - Covalent Immobilization of Protein A on Chitosan a DOI: 10.1093/chromsci/bmy070 -
信頼度 0.9
“Part of the broad band 3100-2500/cm”
Martins 等 - 2020 - Release of adsorbed ferulic acid in simulated gast DOI: 10.1007/s00217-020-03489-w -
Hydroxyl (O-H) 信頼度 0.9
“Part of broad O-H absorption region.”
Nguyen 等 - 2019 - Properties of Pectin Extracted from Vietnamese Man DOI: 10.3390/foods8120629
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