What absorbs at 404 cm⁻¹ in an FTIR spectrum?
A band near 404 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
Atribuiri posibile ale grupelor funcționale
| Grup funcțional | Fapte suport | Surse citate | Încredere maximă |
|---|---|---|---|
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| N-O bond | 1 | 1 | 1,0 |
Clasamentul reflectă dovezile acumulate din literatură, nu o singură regulă autoritară. Confirmați întotdeauna în contextul mostrei dvs.
Literatura din spatele acestor atribuiri
-
încredere 1,0
“2 38 285.0 eV that has been attributed to Ru 3d as well as the absence of a diazonium peak at 403.8 39 40 eV.28,56 Titanium peaks in the XPS spectra were standard for TiO 2, with no peak present that would”
Surface Grafting of Ru(II) Diazonium-Based Sensitizers on Metal Oxides Enhances Alkaline Stability for Solar Energy Conversion DOI: 10.1021/acsami.7b16641 -
încredere 1,0
“The appearance of a t broad peak at 403.71 eV is due to the N 1s shake up satellite of the ionized nitrogen atoms [40].”
Investigation of the binding of dioxin selective pentapeptides to a polyaniline matrix DOI: 10.1016/j.synthmet.2012.04.012. -
Protein încredere 1,0
“The other major bands ν 404 corresponded to the principal cellular components such as the proteins (the amide I band cm-1;”
Cointet 等 - 2019 - Lipids in benthic diatoms A new suitable screenin DOI: 10.1016/j.algal.2019.101425 -
Acetate încredere 1,0
“C-O-C stretching 404 bands (both the glucopyranose ring and glycosidic bridges) are observed in the cm-1.”
Lefroy 等 - 2021 - A natural, cellulose-based microgel for water-in-o DOI: 10.1016/j.foodhyd.2020.106408
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