What absorbs at 1698 cm⁻¹ in an FTIR spectrum?
A band near 1698 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
가능한 작용기 할당
| 작용기 | 지원 사실 | 인용 출처 | 최고 신뢰도 |
|---|---|---|---|
| Carboxyl (COOH) | 2 | 2 | 0.9 |
| Carbonyl (C=O) | 2 | 2 | 0.9 |
| C=n | 1 | 1 | 0.9 |
| Hydroxyl (O-H) | 1 | 1 | 0.9 |
| Urethane | 1 | 1 | 0.9 |
| Protein beta sheet | 1 | 1 | 0.9 |
순위는 단일 권위 규칙이 아닌 축적된 문헌 증거를 반영합니다. 항상 샘플 상황에 대해 확인하세요.
이 할당의 배경이 되는 문헌
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Protein beta sheet 신뢰도 0.9
“Explicit assignment: 'vibration 1698 attributed to antiparallel β-sheet'”
Bouyanfif 等 - 2019 - Fourier transform infrared microspectroscopy detec DOI: 10.1016/j.vibspec.2019.04.005 -
Urethane 신뢰도 0.9
“Explicitly stated 'urethane bands are located at 1698 cm-1'.”
Hirzin 等 - 2018 - The behavior of semi-rigid polyurethane film based DOI: 10.1007/s10853-018-2578-8 -
Carboxyl (COOH) 신뢰도 0.9
“Snippet states 'carboxyl (C=O) and hydroxyl groups (OH) of AAc give rise to an absorption peak at 1698'”
Najafabadi 等 - 2014 - Surface Modification of Castor Oil-Based Polyureth DOI: 10.1002/adv.21411 -
C=n 신뢰도 0.9
“Text: 'FLM IR's main signals appeared at ~ 1698 (C=N stretching vibration)'.”
Ghaderi 等 - 2017 - Thermal Stability and Kinetic Study of Fluvoxamine DOI: 10.15171/apb.2017.006 -
신뢰도 0.9
“Explicit assignment: asymmetrical vibration band of C=O citric group.”
Janusz 等 - 2020 - Synthesis of citrates of selected lanthanides (Er, DOI: 10.37190/ppmp/128739 -
Carbonyl (C=O) 신뢰도 0.9
“Explicit assignment: '1698 (stretching mode of the C=O)'.”
Meme 等 - 2021 - ATR-FTIR Analysis of Orthodontic Invisalign Aligne DOI: 10.3390/ma14040818 -
Carboxyl (COOH) 신뢰도 0.9
“explicit assignment”
Nazary Abrbekoh 等 - 2022 - Combination of polyglycerol sebacate coated with c DOI: 10.34172/jcvtr.2022.31 -
Carbonyl (C=O) 신뢰도 0.6
“Text mentions C=O bands in the 1698-1723 cm-1 region.”
Fatahala 等 - 2017 - Pyrrole and Fused Pyrrole Compounds with Bioactivi DOI: 10.3390/molecules22030461
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