What absorbs at 1788 cm⁻¹ in an FTIR spectrum?
A band near 1788 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 5 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 |
|---|---|---|---|
| Methacrylate | 3 | 3 | 1.0 |
| Acetate | 3 | 3 | 1.0 |
| Methoxy (OCH3) | 2 | 2 | 1.0 |
| C-O single bond | 2 | 2 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Carbonate | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Aldehyde (CHO) | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| N-O bond | 1 | 1 | 1.0 |
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
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N-O bond 置信度 1.0
“1200cm-1 1788cm-1 900 and No peak at and the C-O-C and C-O ring vibrations also indicates the remaining aldehyde final in various polysaccharides in the cell wall [32].”
Sukprasert 等 - 2020 - Synchrotron FTIR Light Reveals Signal Changes of B DOI: 10.1155/2020/6149713 -
Alkyl C-H 置信度 1.0
“The presence of peak at 2516 θθ θθ 2θ (º) cm-1 cm-1 and 1788 is C-H stretching vibration.”
Ding 和 Ni - 2013 - Preparation and Characterization of Biomorphic CaC DOI: 10.14233/ajchem.2013.OH50 -
Acetate 置信度 1.0
“Furthermore, two prominent absorption peaks were observed at 1080 and cm-1 cm-1 1788 associated with C-O stretching, respectively.”
Thermomechanical characterization of bioplastic films produced using a combination of polylactic acid and bionano calcium carbonate DOI: 10.1038/s41598-022-20004-1 -
Hydroxyl (O-H) 置信度 1.0
“1788 cm the O-H stretching vibrations of CMC chains.”
Development of hydrogel based on Carboxymethyl cellulose/poly(4-vinylpyridine) for controlled releasing of fertilizers DOI: 10.1186/s13065-022-00846-6 -
Carbonyl (C=O) 置信度 1.0
“when The carbonyl stretching of "free" propylene carbonate falls at 1788 cm-1 The carbonyl stretching of "free" propylene carbonate falls at 1788 C=O);”
Plasticizers and Salt Concentrations Effects on Polymer Gel Electrolytes Based on Poly (Methyl Methacrylate) for Electrochemical Applications DOI: 10.3390/gels8060363
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