What absorbs at 747 cm⁻¹ in an FTIR spectrum?
A band near 747 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 7 cited sources
Možná přiřazení funkčních skupin
| Funkční skupina | Podpůrná fakta | Citované zdroje | Nejvyšší spolehlivost |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1,0 |
| Alkyl C-H | 3 | 3 | 1,0 |
| Aromatic ring | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
Pořadí odráží nahromaděné literární důkazy, nikoli jediné autoritativní pravidlo. Vždy potvrďte v kontextu vašeho vzorku.
Literatura za těmito přiřazeními
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Carbonyl (C=O) spolehlivost 1,0
“Therefore, the ging band appears between 850 and regions, even though only one carbonyl group is present, prob746cm-1 747cm-1 in the infrared and in Raman is band at ably due to Fermi resonance.”
Arjunan 等 - 2007 - Fourier transform infrared and Raman spectral assi DOI: 10.1016/j.saa.2006.09.044 -
Aromatic ring spolehlivost 1,0
“The FTIR spectrum of FNTs/FU conjugated with FA/MNPs showed peaks at wavelengths of 747, 878, 623, 1000-1400, corresponding to benzene vibration of FF, CF=CH of FU, Fe-O, fluoro of FU respectively (Fig.”
Covalent diphenylalanine peptide nanotube conjugated to folic acid/magnetic nanoparticles for anti-cancer drug delivery DOI: 10.1016/j.jddst.2017.06.005 -
Metal oxygen spolehlivost 1,0
“LLM confirmed rule peak-group candidate”
Retnoningtyas 等 - 2022 - Synthesis and Characterization of Methionine-Funct DOI: 10.33263/BRIAC125.58455859 -
Acetate spolehlivost 1,0
“show C-H bond stretching vibrations, whereas the peak at specifies 1,747cm-1 cm-1 C=O stretch, and 1,769 depicts CH2/ 1,726cm-1 CH3 stretch in the EVA particle sample.”
Hossain 等 - 2023 - First evidence of microplastics and their characte DOI: 10.3389/fenvs.2023.1232931 -
Metal oxygen spolehlivost 1,0
“LLM confirmed rule peak-group candidate”
Nadeem 等 - 2022 - Stability Analysis of Fe3O4-OA-MWCNT Nanocomposite DOI: 10.1155/2022/1859698 -
spolehlivost 1,0
“An absorption peak appeared at cm-1 747 which could be assigned to Al-O bond of Al 2O 3.”
Efficient removal of 2-chlorophenol from aqueous solution using TiO2 thin films/alumina disc as photocatalyst by pulsed laser deposition DOI: 10.1007/s13201-021-01372-x -
Alkyl C-H spolehlivost 1,0
“The peak at 747 is assigned to the to cm-1 C-H bending vibrations of the benzene [35].”
Thabede 等 - 2023 - Synthesis of lanthanum metal organic framework usi DOI: 10.15251/DJNB.2023.181.157
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