What absorbs at 1738 cm⁻¹ in an FTIR spectrum?
A band near 1738 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Carbonyl (C=O) | 10 | 10 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| N h | 1 | 1 | 0.9 |
| C n single bond | 1 | 1 | 0.9 |
| Carbohydrate | 1 | 1 | 0.9 |
| C-O single bond | 1 | 0 | 0.9 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
-
Ester 置信度 1.0
“Peak at 1738 cm-1 due to vibrations of ester C=O.”
Sireesha 等 - 2015 - Biocompatible and biodegradable elastomerfibrinog DOI: 10.1039/c5ra20322h -
Carbonyl (C=O) 置信度 1.0
“Explicitly assigned in snippet: '1738 (-C=O)'.”
Li 等 - 2020 - Preparation of natural pyrethrum-polylactic acid m DOI: 10.1016/j.scitotenv.2018.11.041. -
Carbonyl (C=O) 置信度 1.0
“Explicit assignment: '1738cm(cid:3)137. C=O'”
Mester 等 - 2020 - Subsurface chemical nanoidentification by nano-FTI DOI: 10.1038/s41467-020-17034-6 -
Carbohydrate 置信度 0.9
“Absence of peak at 1738 indicates removal of hemicellulose.”
Kasyapi 等 - 2013 - Bionanowhiskers from jute Preparation and charact DOI: 10.1016/j.carbpol.2012.10.021 -
Carbonyl (C=O) 置信度 0.9
“Explicit assignment in table.”
Wille 等 - 2003 - Redox-triggered FTIR difference spectra of FAD in DOI: 10.1021/bi035219f -
置信度 0.9
“Snippet: 'disappearance of a peak at 1738 characteristic for the carbonyl stretching of the methyl ester'”
Argentiere 等 - 2010 - Nanogels of Poly(acrylic acid) Uptake and Release DOI: 10.1002/app.31691 -
置信度 0.9
“Explicit assignment: 'attributed to isolated BA molecules'.”
Cozzolino 等 - 2023 - Segregation of Benzoic Acid in Polymer Crystalline DOI: 10.3390/polym15010177 -
Ester 置信度 0.9
“Text: 'absorption band of carbonyl ester (1738 cm#1)'”
Delmas 等 - 2011 - Functionality of Wheat Straw Lignin Extracted in O DOI: 10.1002/APP.33592
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