What absorbs at 1642 cm⁻¹ in an FTIR spectrum?
A band near 1642 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 |
|---|---|---|---|
| Amide | 6 | 3 | 1.0 |
| Water (H2O) | 4 | 4 | 1.0 |
| Carbonyl (C=O) | 3 | 3 | 1.0 |
| Alkene (C=C) | 3 | 2 | 0.9 |
| Silanol (Si-OH) | 1 | 1 | 0.9 |
| Aromatic ring | 1 | 1 | 0.9 |
| N h | 1 | 1 | 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
-
Carbonyl (C=O) 信心 1.0
“Explicit assignment.”
Dewi 等 - 2023 - Biologically-induced synthetic manganese carbonate DOI: 10.1016/j.heliyon.2023.e15919 -
Water (H2O) 信心 1.0
“angular deformation in plane of H-O-H of water”
Braga 等 - 2015 - The energetic characterization of pineapple crown DOI: 10.1007/s11356-015-5082-6 -
Water (H2O) 信心 0.9
“Explicit assignment in text.”
Hastuti 等 - 2020 - Synthesis of N '-(3-Trimethoxysilylpropyl)diethyle DOI: 10.1063/5.0008267 -
N h 信心 0.9
“N-H bending of amine group”
Ali 等 - 2023 - Characterization of plastic degrading bacteria iso DOI: 10.1016/j.sjbs.2023.103628 -
Alkene (C=C) 信心 0.9
“Text: 'The peak at 1642 indicates the presence of C=C, cm-1, which may correspond to the characteristics of aromatic rings.'”
Aranda-Ledesma 等 - 2022 - Essential Oil and Polyphenolic Compounds of Floure DOI: 10.3390/agronomy12102274 -
信心 0.9
“Absorption band at 1642 cm-1 due to stretching vibration (ν C=O, Amide I).”
Banerjee 等 - 2022 - Optimization and Characterization of a Novel Exopo DOI: 10.3390/biom12060834 -
Carbonyl (C=O) 信心 0.9
“Text: 'C=O ... at 1642'”
Fernandez-Gomez 等 - 2023 - Effect of Multi-walled Carbon Nanotubes Functional DOI: 10.1093/micmic/ozad067.016 -
Amide 信心 0.9
“Explicit assignment in text: 'it showed both amide I' and peak value 1642.06 cm-1.”
Goswami 等 - 2013 - An Ecofriendly synthesis of silver nano-bioconjuga DOI: 10.1186/2191-0855-3-16
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