What absorbs at 1562 cm⁻¹ in an FTIR spectrum?
A band near 1562 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 8 cited sources
Snel antwoord
A band near 1562 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Mogelijke functionele-groeptoewijzingen
| Functionele groep | Ondersteunende feiten | Geciteerde bronnen | Hoogste vertrouwen |
|---|---|---|---|
| Amide | 9 | 8 | 1,0 |
| N h | 4 | 3 | 1,0 |
| Carboxyl (COOH) | 3 | 3 | 1,0 |
| Methacrylate | 3 | 3 | 1,0 |
| Acetate | 3 | 3 | 1,0 |
| Alkyl C-H | 2 | 2 | 1,0 |
| Aromatic ring | 2 | 2 | 1,0 |
| Methoxy (OCH3) | 2 | 2 | 1,0 |
| C-O single bond | 2 | 2 | 1,0 |
| Secondary amine | 2 | 2 | 1,0 |
| C n single bond | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 1 | 1,0 |
| Amine primary | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| C=n | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Nitrogen heterocycle | 1 | 1 | 0,9 |
Ranglijst weerspiegelt cumulatief literatuurbewijs, niet één gezaghebbende regel. Bevestig altijd aan de hand van uw monsterecontext.
Mogelijke materialen
| Materiaal | Ondersteunende pieken | Overlappende groepen | Geciteerde bronnen |
|---|---|---|---|
| chitosan | 1562, 1650, 1655 | Amide, Methacrylate, N h | 1 |
| gold nanoparticles | 1562, 1638, 3252 | Amide, Methacrylate | 1 |
| CeO2 | 1562, 1554, 1630 | Methacrylate, Carboxyl (COOH) | 1 |
Materialen worden alleen getoond wanneer dezelfde literatuurpool deze band en ten minste één extra karakteristieke piek ondersteunt.
Spectrumlogica
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1562 cm⁻¹ is usually not enough for material identification by itself.
Gebruik in de praktijk
Dit type query komt vaak voor bij polymeeridentificatie, screening van onbekende kunststoffen, probleemoplossing bij QC, verificatie van gerecycled materiaal en literatuurondersteunde beoordeling van piektoewijzing.
Veelgemaakte fouten
- Het behandelen van een enkele geïsoleerde band als bewijs van een materiaal zonder ten minste een of twee ondersteunende pieken te controleren.
- Overlap negeren: meerdere functionele groepen kunnen bijdragen rond hetzelfde golfgetal.
- Validatie overslaan wanneer additieven, mengsels, oxidatie of verontreiniging het spectrum kunnen verstoren.
Advies voor verificatie
Wanneer dubbelzinnigheid blijft bestaan, valideer de hypothese met DSC, GC-MS of TGA, vooral voor mengsels, gedegradeerde monsters en gevulde polymeren.
Literatuur achter deze toewijzingen
-
Amide vertrouwen 1,0
“In general, both FTIR spectra are very similar, and the difference is only in intensity, the peak cm-1 at 1562 corresponds to amide II bond of peptide.”
Comparative Toxicity of Interferon Beta-1a Impurities of Heavy Metal Ions DOI: 10.3390/medicina58040463 -
Water (H2O) vertrouwen 1,0
“The appearance of the peaks at 1562, 1556 or 1541cm(cid:2)1 1562cm(cid:2)1 watercontent,but thepeak at might be related to the participation of water in the was lacking (Fig.”
Cheng 等 - 2008 - Effect of moisture content on solid-state interact DOI: 10.1016/j.apsusc.2008.08.009 -
Amide vertrouwen 1,0
“intensity of ethylenic bond frequency at 1562 cm-1 The result from this study indicated that the amide II band at 1559 that may contribute to the amine-NH group was specific for CLCG.”
Synthesis, Characterization, and Antibacterial Activity of Cross-Linked Chitosan-Glutaraldehyde DOI: 10.3390/md11051534 -
Amide vertrouwen 1,0
“Images generated from the normalized intensity of the second derivative of the FTIR cm-1) cm-1): and the shifted protein amide I band (1664 (d, e) for controls (skin spectra, centered around the hydroxamate amide II band (1562”
High-Sensitivity Permeation Analysis of Ultrasmall Nanoparticles Across the Skin by Positron Emission Tomography DOI: 10.1021/acs.bioconjchem.1c00017 -
vertrouwen 1,0
“Notable bands at 1578cm-1, 1562cm-1 may be assigned to O-C-O stretching or N -coordination through alkaloids”
Synthesis of nanostructured CeO2 by chemical and biogenic methods: Optical properties and bioactivity DOI: 10.1016/j.ceramint.2020.02.204 -
Aromatic ring vertrouwen 1,0
“RIP Fourier Transmission Infra-Red spectroscopy (FTIR) and it is found that the important peaks cm-1 cm-1 were appeared at 490 due to the benzenoid ring stretching vibration, 1562 for C cm-1 quinoid ring vibration and 743 corresponds to the”
Antistatic and Dielectric properties of one-dimensional Al2+:Nd2O3 nanowire doped polyaniline nanocomposites for electronic application DOI: 10.1016/j.sna.2018.07.018 -
Amide vertrouwen 1,0
“vibrations of 1562 (amide I) and the bending vibration But upon the forming of BPN, the spectral”
Shan 等 - 2010 - Quantitative analysis of hemoglobin content in pol DOI: 10.1007/s10856-009-3864-4 -
C=n vertrouwen 1,0
“3c) The presence of peaks appearing at the wave numshowed the shifting of peak at wave number of cm-1 on the Y-IPs' IR spectra bers of 1562 and 1600 cm-1, 1562 assigning to C=N stretching vibration of before and after leaching indicates the”
Zulfikar 等 - 2017 - Separation of Yttrium from Aqueous Solution Using DOI: 10.3103/S1067821217060189
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