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
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| 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
-
Aromatic ring 信心 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 信心 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) 信心 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) 信心 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 信心 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) 信心 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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