What absorbs at 1631 cm⁻¹ in an FTIR spectrum?
A band near 1631 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
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Carbonyl (C=O) | 3 | 3 | 1.0 |
| Amide | 3 | 3 | 0.95 |
| Aromatic ring | 2 | 2 | 1.0 |
| Protein beta sheet | 2 | 2 | 0.95 |
| Alkene (C=C) | 1 | 1 | 0.9 |
| C c single bond | 1 | 1 | 0.9 |
| C n single bond | 1 | 1 | 0.9 |
| Hydroxyl (O-H) | 1 | 1 | 0.9 |
| Metal oxygen | 1 | 1 | 0.7 |
| Carboxyl (COOH) | 1 | 0 | 0.9 |
排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。
這些指派背後的文獻
-
Aromatic ring 信心 1.0
“assigned to C=C aromatic”
Rukman 等 - 2019 - GO-Fe3O4 Nanocomposite from coconut shell Synthes DOI: 10.1088/1755-1315/217/1/012008 -
Carbonyl (C=O) 信心 1.0
“Explicit assignment in text.”
Al-Shdefat 等 - 2023 - Ribociclib Hybrid Lipid-Polymer Nanoparticle Prepa DOI: 10.3390/polym15132844 -
信心 1.0
“Explicit assignment in text”
Babu 等 - 2022 - Antibacterial, Antioxidant, Larvicidal and Antican DOI: 10.3390/Shikun -
Amide 信心 0.95
“Explicit assignment: 'Amide I bands close to 1631 and 1696 are β-sheet ... indicative of secondary structure'”
Hepler 等 - 2018 - Spectroscopic analysis of chlamydial major outer m DOI: 10.1002/pro.3501 -
Amide 信心 0.95
“Text: '1631.10 ... identified as ... amide I (C=O and C-N stretching vibration)'”
Taokaew 等 - 2013 - Biosynthesis and Characterization of Nanocellulose DOI: 10.3390/ma6030782 -
信心 0.9
“Explicit assignment: 'was measured via the ultraviolet absorbance of the tyrosine (cid:24)1631 cm-1. frequency, having maximum at'”
Barber-Armstrong 等 - 2004 - Empirical relationships between isotope-edited IR DOI: 10.1021/ja037863n -
Carbonyl (C=O) 信心 0.9
“Explicit assignment in text.”
Devi 等 - 2021 - Development of a water dispersible granule (WDG) f DOI: 10.1080/09583157.2021.1895073 -
Protein beta sheet 信心 0.9
“Explicit assignment: 'IR peak at 1631 (cid:2)-sheet'.”
Lee 和 Lin - 2011 - Additives affecting thermal stability of salmon ca DOI: 10.1016/j.procbio.2011.08.017
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