What absorbs at 1157 cm⁻¹ in an FTIR spectrum?
A band near 1157 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
Mulige funksjonelle gruppe-tilordninger
| Funksjonell gruppe | Støttende fakta | Siterte kilder | Toppkonfidens |
|---|---|---|---|
| C-O single bond | 6 | 5 | 1.0 |
| Carbohydrate | 2 | 1 | 0.9 |
| Sulfate (SO4) | 1 | 1 | 0.9 |
| N h | 1 | 1 | 0.9 |
| Carbonyl (C=O) | 1 | 1 | 0.9 |
| Phosphate (PO4) | 1 | 0 | 0.9 |
Rangeringen gjenspeiler akkumulert litteraturbevis, ikke en enkelt autoritativ regel. Bekreft alltid mot prøvekonteksten din.
Litteratur bak disse tilordningene
-
C-O single bond konfidens 0.9
“Explicit assignment in text.”
Bushra 等 - 2013 - Microwave assisted acetylation of mung bean starch DOI: 10.1002/star.201200081 -
Carbonyl (C=O) konfidens 0.9
“Explicit assignment: 1157 cm-1 stretching vibration of ester carbonyl groups.”
Kaur 等 - 2020 - Changes in chemical properties and oxidative stabi DOI: 10.1111/jfpp.14445 -
C-O single bond konfidens 0.9
“Text: 'C-O (1157'”
Montenegro 等 - 2023 - Enzymatic and Synthetic Routes of Castor Oil Epoxi DOI: 10.3390/polym15112477 -
Carbohydrate konfidens 0.9
“Text: 'polysaccharide peaks at 1157 and 898 cm-1'.”
Pandey 和 Pitman - 2004 - Examination of the lignin content in a softwood an DOI: 10.1002/pola.20071 -
C-O single bond konfidens 0.9
“asymmetric stretching of ether C-O”
Ferreira dos Santos 等 - 2017 - Surface modification of poly (ether-ether-ketone) DOI: 10.1590/S1517-707620170004.0217 -
N h konfidens 0.9
“stretching vibration of N-H bonds”
Lu 等 - 2016 - Use of polyurea from urea for coating of urea gran DOI: 10.1186/s40064-016-2120-x -
konfidens 0.9
“Explicit assignment: 'characteristic bands of carotenoids at ~1157'”
Montero 等 - 2021 - Differential Membrane Lipid Profiles and Vibration DOI: 10.3390/ijms222011277 -
C-O single bond konfidens 0.9
“typical bands for PCL”
Rajzer 等 - 2021 - Conductive Polyaniline Patterns on Electrospun Pol DOI: 10.3390/ma14174837
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