What absorbs at 1564 cm⁻¹ in an FTIR spectrum?
A band near 1564 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 4 cited sources
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Aromatic ring | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| C=n | 1 | 0 | 1,0 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Bibliographie derrière ces attributions
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C c single bond confiance 1,0
“ketone group vibration), (CO-R vibration), 1596cm-1and 1564cm-1 -C=C- -C=O (range of and vibra- -NH tion and deformation).”
Physicochemical characterization of solid dispersions of three antiepileptic drugs prepared by solvent evaporation method DOI: 10.1211/jpp.59.5.0004 -
Carboxyl (COOH) confiance 1,0
“at 1564 This band may be assigned to antisymmetric stretching vibrations of ionised as(COO-), ν carboxylate residues (salts of carboxylic acids), in the biomacromolecular shell of SeNPs.”
Fourier Transform Infrared (FTIR) Spectroscopic Analyses of Microbiological Samples and Biogenic Selenium Nanoparticles of Microbial Origin: Sample Preparation Effects DOI: 10.3390/molecules -
Alkyl C-H confiance 1,0
“characteristic absorption peaks of pure drug irbesartan cm-1 cm-1 were found at 3445 (N-H stretch), 3033 (C-H cm-1 stretch), 1564 (C=C aromatic).”
Puri 等 - 2020 - Development of binary dispersions and nanocomposit DOI: 10.34172/bi.2020.34 -
Aromatic ring confiance 1,0
“spectrum at 1564 and 1477 These bands can be CC attributed to the vibrations of quinoid and benzenoid units, respectively.”
Aniline-co-o-anthranilic Acid Copolymer-Chitosan/Ag@AgCl Nanohybrid as a Carrier for (E)-N′-(Pyridin-2-ylmethylene) Hydrazinecarbothiohydrazide Release and Antimicrobial Activity DOI: 10.1021/acsomega.1c02212
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