What absorbs at 1576 cm⁻¹ in an FTIR spectrum?
A band near 1576 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 6 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 |
|---|---|---|---|
| Alkene (C=C) | 2 | 2 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Sulfur heterocycle | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Ring structure | 1 | 0 | 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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Aromatic ring 置信度 1.0
“The vibration band at 1576 cor6 responds to the quinoid ring units whereas lower frequency cm21 vibration band at 1476 depicts the presence of benzenoid ring units.”
Chutia 和 Kumar - 2015 - Electrical Transport and Morphological Studies of DOI: 10.1002/pen.23967 -
Sulfur heterocycle 置信度 1.0
“Synthesis of PMOT/NiO nanocomposite The band thiophene ring were found at 1576 and 1398 cm-1 at 1092 has been identified as the stretching vibration of”
Sehgal 和 Narula - 2015 - Structural, morphological, optical, and electrical DOI: 10.1007/s00396-015-3663-z -
Alkene (C=C) 置信度 1.0
“In cm-1 addition, rGO-7 and rGO-16 also sh howed C=C stretching at 1576 and 1586 which h are specific to cm-1 aromatic compounds and cyclohe exene.”
Sugianto 等 - 2019 - Facile Synthesis of Lycopene Reduced Graphene Oxid DOI: 10.1088/1757-899X/546/4/042044 -
Carboxyl (COOH) 置信度 1.0
“Simultaas due to hydroxyl groups linearly coordinated to single cm-1, cm-1 neously, a couple of bands at 1576 and 1296 due to cations (Ce-Type I), and the most intense one at 3663 species,58 formate are developed.”
Collins 等 - 2007 - Hydrogen interaction with a ceria-zirconia support DOI: 10.1021/jp071968l -
Alkyl C-H 置信度 1.0
“C=O stretching (ester groups) 2 C=O stretching (carboxyl COO1576 2880 CH symmetric stretching 1620 3”
Application of Vibrational Spectroscopic Techniques in the Study of the Natural Polysaccharides and Their Cross-Linking Process DOI: 10.3390/ijms24032630 -
Alkene (C=C) 置信度 1.0
“At 77 K, a clear peak pair was observed at 1576 (-)/ cm-1, 1560 (+) which corresponds to the ethylenic C=C stretching vibration of MB and Batho.”
Hanai 等 - 2021 - Light-induced difference FTIR spectroscopy of prim DOI: 10.2142/biophysico.bppb-v18.005
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