What absorbs at 1739 cm⁻¹ in an FTIR spectrum?
A band near 1739 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) | 9 | 9 | 1.0 |
| Alkyl C-H | 2 | 2 | 0.9 |
| Carbohydrate | 1 | 1 | 0.9 |
| Ketone | 1 | 1 | 0.9 |
| Carboxyl (COOH) | 1 | 1 | 0.9 |
| Lipid | 1 | 1 | 0.8 |
| Ester | 1 | 0 | 0.8 |
| Anhydride | 1 | 0 | 0.8 |
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
“The band at 1445 was selected because it 8000 ratio provided a linearity, precision and LOD comparable to the cm-1 6000 carbonyl band at 1739 as well as better accuracy for”
Armenta 等 - 2007 - Determination of iprodione in agrochemicals by inf DOI: 10.1007/s00216-007-1152-z -
Carbonyl (C=O) 信心 1.0
“sharp and intense peaks for C=O”
Rozi 等 - 2016 - Characterization of Ultraviolet-Photocured Acrylam DOI: 10.1063/1.4966755 -
信心 1.0
“Vibration assigned to C=O”
Thabede 等 - 2021 - Magnetite Functionalized Nigella Sativa Seeds for DOI: 10.1155/2021/6655227 -
信心 0.9
“Explicit assignment in text: 'bands at 1679 and 1739 belonging to the Ba'”
Azzahari 等 - 2018 - Conductivity or rheology Tradeoff for competing p DOI: 10.1007/s11581-018-2515-5 -
Carbonyl (C=O) 信心 0.9
“Explicit assignment in text.”
Boskabadi 等 - 2021 - Topical Gel of Vitamin A Solid Lipid Nanoparticles DOI: 10.34172/apb.2021.075 -
Alkyl C-H 信心 0.9
“Explicit: '1739.42 for -C-H deformation'.”
Haque 等 - 2020 - Degradation of Reactive Blue 19 Dye Using Copper N DOI: 10.15244/pjoes/104663 -
Carboxyl (COOH) 信心 0.9
“Text: 'shoulder at about 1739 cm-1 originating from vibrations of carboxyl, carbonyl, and ketone groups'”
Hornemann 等 - 2017 - A pilot study on fingerprinting Leishmania species DOI: 10.1007/s00216-017-0655-5) -
信心 0.9
“Explicit assignment: stretching vibration of carbonyl C=O in acetyl group.”
Long 等 - 2021 - Effect of Hot-pressing Process on Mechanical Prope DOI: 10.5552/drind.2017.1641
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