What absorbs at 1723 cm⁻¹ in an FTIR spectrum?
A band near 1723 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) | 17 | 16 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Amide | 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
“The other cm21 longed TC-HCl release, PHT-Na release behavior revealed that it peaks such as 1723 and 2941 corresponding to ester and can help the wound dressings to heal the wounds during 24 h carbon-hydrogen bonds in the chemical structur”
Askari 等 - 2016 - Three-layered electrospun PVAPCLPVA nanofibrous DOI: 10.1002/app.43309 -
Carboxyl (COOH) 信心 1.0
“Explicit assignment in text: 'peaks at 1723.23 and 1666.12 assigned to COO- and NH groups'”
Mahmud 等 - 2010 - Kinetic Analysis of Oleic Acid Esterification Usin DOI: 10.1021/ie900704n -
Carbonyl (C=O) 信心 1.0
“Explicit assignment: 'carbonyl (C=O) at 1723'.”
Akhgari 等 - 2013 - Indomethacin electrospun nanofibers for colonic dr DOI: 10.5681/apb.2013.014 -
Ketone 信心 1.0
“carbonyl index peak”
Brandao 等 - 2022 - Influence of the nature of pro-oxidants on the pho DOI: 10.1016/j.heliyon.2022.e10217 -
Carbonyl (C=O) 信心 1.0
“Text: '1723 (ν C=O, ketone)'”
Piorecka 等 - 2020 - Hydrophilic Polyhedral Oligomeric Silsesquioxane, DOI: 10.3390/ma13235512 -
Carbonyl (C=O) 信心 0.95
“Explicit assignment: 'peak at 1723 cm-1 corresponds to free C=O groups'”
Norjeli 等 - 2022 - Additive Manufacturing Polyurethane Acrylate via S DOI: 10.3390/gels8090589 -
Carbonyl (C=O) 信心 0.9
“Text: 'carbonyl stretching absorption at 1723 cm-1'.”
Gwon 等 - 2010 - Characterization of Chemically Modified Wood Fiber DOI: 10.1002/app.31746 -
Carbonyl (C=O) 信心 0.9
“Explicitly assigned to carbonyl functional group.”
Jacob 等 - 2013 - Green Synthesis for Lignin Plasticization Aqueous DOI: 10.7569/JRM.2012.634107
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