What absorbs at 1726 cm⁻¹ in an FTIR spectrum?
A band near 1726 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
Možne dodelitve funkcionalnih skupin
| Funkcionalna skupina | Podporna dejstva | Citirani viri | Najvišje zaupanje |
|---|---|---|---|
| Carbonyl (C=O) | 4 | 4 | 1,0 |
| Urethane | 1 | 1 | 0,95 |
| Alkene (C=C) | 1 | 1 | 0,9 |
| Ester | 1 | 1 | 0,9 |
| Aromatic ring | 1 | 1 | 0,7 |
| Alkyl C-H | 1 | 1 | 0,7 |
| Carboxyl (COOH) | 1 | 0 | 0,8 |
| Carbohydrate | 1 | 0 | 0,7 |
Razvrstitev odraža zbrane literaturne dokaze, ne enega avtoritativnega pravila. Vedno preverite glede na kontekst vašega vzorca.
Literatura za temi dodelitvami
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Carbonyl (C=O) zaupanje 1,0
“Explicit assignment in text: 'C=O stretching band at 1726 cm-1'”
Pintus 等 - 2021 - A Multi-Analytical Approach for Studying the Effec DOI: 10.3390/polym13244441 -
Urethane zaupanje 0,95
“Text: characteristic stretching vibration peak of urethane group at 1726 cm-1.”
Kong 等 - 2017 - Preparation and thermal properties of crosslinked DOI: 10.1039/c7ra04504b -
Carbonyl (C=O) zaupanje 0,9
“Explicit assignment: 'ν (C=O)'.”
Kusrini 等 - 2020 - Synthesis, characterization, and performance of gr DOI: 10.1016/j.apsusc.2019.145005 -
Carbonyl (C=O) zaupanje 0,9
“Strong carbonyl group (C=O) at 1726 cm-1.”
Kettner 等 - 2022 - Leptolyngbya sp. NIVA-CYA 255, a Promising Candida DOI: 10.3390/biom12040504 -
zaupanje 0,9
“Explicit assignment.”
Lyszczek 等 - 2022 - A Top-Down Approach and Thermal Characterization o DOI: 10.3390/ma15248826 -
Ester zaupanje 0,9
“Text: 'cm-1 corresponding to C=O stretch of the ester group.'”
Madhusoodanan 等 - 2022 - Dissolved oxygen as a propulsive parameter for pol DOI: 10.1007/s10668-021-01626-3 -
Carbonyl (C=O) zaupanje 0,9
“Explicit assignment: 'bands at 1725.67 ... corresponding to C=O C=C'”
Thakur 等 - 2011 - Poly(vinylidene fluoride)-graft-poly(2-hydroxyethy DOI: 10.1039/c0jm02408b -
zaupanje 0,85
“Peak reflects isocyanurate ring vibration.”
Makki 等 - 2015 - Quantitative spectroscopic analysis of weathering DOI: 10.1016/j.polymdegradstab.2015.09.019
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