What absorbs at 1741 cm⁻¹ in an FTIR spectrum?
A band near 1741 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) | 7 | 7 | 1.0 |
| Ester | 3 | 3 | 0.9 |
| C-O single bond | 2 | 2 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 0.8 |
| Triglyceride | 1 | 1 | 0.9 |
| Alkyl C-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 in text: 'v(C=O) is found to blue-shift from 1741 cm-1'”
Li 等 - 2020 - Insight into the Intermolecular Interaction and Fr DOI: 10.3390/polym12010078 -
Carbonyl (C=O) 信心 0.95
“Explicit assignment: 'at 1741 (C=O stretch)'.”
Lee 等 - 2008 - Surface-initiated ring-opening polymerization of p DOI: 10.1002/pola.22457 -
Ester 信心 0.9
“Peak observed at 1741 cm-1 assigned to ester group.”
Bahadi 等 - 2022 - Synthesis of ISO Grade 46 and 68 Biolubricant from DOI: 10.17576/jsm-2022-5108-13 -
Carbonyl (C=O) 信心 0.9
“Strong peak of carbonyl band at 1741 cm-1 indicates presence of biodiesel.”
Kumar 和 Sidharth - 2018 - Some Studies on use of ternary blends of diesel, b DOI: 10.1080/15567036.2018.1486902 -
Carbonyl (C=O) 信心 0.9
“carbonyl stretching band of polyester”
Benkaddour 等 - 2013 - Grafting of Polycaprolactone on Oxidized Nanocellu DOI: 10.3390/nano3010141 -
Carbonyl (C=O) 信心 0.9
“Carbonyl stretching.”
Brossier 等 - 2021 - Synthesis of Poly(Trimethylene Carbonate) from Ami DOI: 10.3390/polym13020280 -
Alkyl C-H 信心 0.9
“Explicit assignment from text: '1741 2, C-C-H and H-C-O deformations'”
Coelho 等 - 2020 - DOI: 10.1590/1981-6723.19418 -
信心 0.9
“Explicit assignment”
Durak 等 - 2021 - Changes in Chemical Composition and Accumulation o DOI: 10.3390/ijms22020511
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