What absorbs at 445 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 445 cm⁻¹ puede apuntar a varios grupos funcionales. A continuación se muestran las asignaciones más probables, clasificadas por cuánta evidencia publicada respalda cada una — cada una trazable a literatura (DOI) y validada de forma cruzada con nuestros más de 130,000 espectros de referencia y grafo de conocimiento.
Backed by 8 cited sources
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1,0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1,0 |
| Silicon (Si) | 2 | 2 | 1,0 |
| Methoxy (OCH3) | 2 | 2 | 1,0 |
| Methacrylate | 2 | 2 | 1,0 |
| C-O single bond | 2 | 2 | 1,0 |
| Acetate | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Silicate | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
La clasificación refleja la evidencia acumulada de la literatura, no una única regla autorizada. Siempre confirme según el contexto de su muestra.
Literatura detrás de estas asignaciones
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Carbonyl (C=O) confianza 1,0
“443 The FTIR results for the black paint confirmed the presence of the characteristic absorption 444 peaks of an alkyd paint, dominated by the sharp and intense absorptions at 1720 and 1256 445 cm-1, due to the stretching mode of the carbon”
Catto 等 - 2021 - Bioremoval of graffiti using novel commercial stra DOI: 10.1111/j.1574-6941.2006.00028.x -
Phosphate (PO4) confianza 1,0
“Therefore, in the obtained Raman spectra the presence of the phosphate group is highlighted by the vibrational bands at around 445 and 432 cm-1 that could be attributed 𝜈 to (PO43-) bending mode.”
Development of Silver Doped Hydroxyapatite Thin Films for Biomedical Applications DOI: 10.3390/coatings12030341 -
confianza 1,0
“445 asymmetric stretching vibration of the Si-O-T group between 991 and 977 446 Furthermore, when these bands are compared to the same band in the infrared spectra 447 of the precursors, MK and SSA, there is a shift of this band to a lower”
Istuque 等 - 2019 - Effect of sewage sludge ash on mechanical and micr DOI: 10.1016/j.conbuildmat.2019.01.093 -
confianza 1,0
“The IR spectrum of pure ZnO particles cm-1 (Figure 5a) showed two characteristic peaks: a broad and very weak peak at 3431 (Figure 5a) showed two characteristic peaks: a broad and very weak peak at 3431 cm-1 correcorresponding to the O-H st”
Deposition of Zinc Oxide Coatings on Wood Surfaces Using the Solution Precursor Plasma Spraying Process DOI: 10.3390/coatings11020183 -
Ester confianza 1,0
“a group of bands at 1238, 1163, 1114 and 1099 obtained from the 445 cm-1 ester groups stretching vibrations (-C-O);”
Kharbach 等 - 2021 - New insights into the Argan oil categories charact DOI: 10.1016/j.talanta.2020.122073 -
Metal oxygen confianza 1,0
“The two strong bands at 445 and 610 are attributed to the O-Ti-O bending vibration and asymmetric Ti-O stretching vibration, respectively.”
In Situ High-Pressure Raman Spectroscopic, Single-Crystal X-ray Diffraction, and FTIR Investigations of Rutile and TiO2II DOI: 10.3390/min13050703 -
Silicon (Si) confianza 1,0
“cm-1 cm-1 υ2-type Two peaks at about 445 and 483 associated with internal deformaTwo peaks at about 445 cm-1 and 483 cm-1 associated with υ2-type internal υ4-type tions (O non-Si-O vibrations) and asymmetric bending (ASB) vibrations deforma”
Madadi 和 Wei - 2022 - Characterization of Calcium Silicate Hydrate Gels DOI: 10.3390/gels8020075 -
confianza 1,0
“These DTG curves also presented peaks 445 related to the formation of hydrated calcium silicates and calcium aluminates.”
Moraes 等 - 2019 - Production of bamboo leaf ash by auto-combustion f DOI: 10.1016/j.conbuildmat.2019.03.007
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