What absorbs at 1746 cm⁻¹ in an FTIR spectrum?
A band near 1746 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
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 |
| Ester | 3 | 2 | 1.0 |
| Lipid | 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
-
Ester 信心 1.0
“Explicit assignment in text.”
Alpandi 等 - 2022 - Characterization of Malaysian Jatropha Seed Oil an DOI: 10.3390/pr10122577 -
Carbonyl (C=O) 信心 1.0
“Strong absorption attributed to C=O stretching”
Seslija 等 - 2018 - Physico-chemical evaluation of hydrophobically mod DOI: 10.1016/j.ijbiomac.2018.03.006 -
Carbonyl (C=O) 信心 0.9
“Text: 'ester carbonyl stretch at 1746' and 'C-O diesel is monitored by the ester stretch (1746'”
Ault 和 Pomeroy - 2012 - Quantitative Investigations of Biodiesel Fuel Usin DOI: 10.1021/ed101097n -
Carbonyl (C=O) 信心 0.9
“Explicit assignment: 'ester carbonyl peak at 1746'.”
Khaksar 等 - 2014 - Nisin-loaded alginate-high methoxy pectin micropar DOI: 10.1111/ijfs.12516 -
信心 0.9
“Explicitly stated: '1746.24 (-HC=CH-); ester'”
Alam 等 - 2020 - Development of Hydrophobic, Anticorrosive, Nanocom DOI: 10.3390/polym12122886 -
Lipid 信心 0.9
“Correlation between FTIR absorbance at 1746 cm-1 and lipids concentrations quantified by fluorescence after Nile-Red staining.”
Scarsini 等 - 2021 - Metabolite Quantification by Fourier Transform Inf DOI: 10.3389/fpls.2021.756421 -
信心 0.8
“Assigned to polymer chemical structures within wood.”
Mattos 等 - 2015 - Wood-polymer composites prepared by in situ polyme DOI: 10.1590/0104-1428.1868
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