What absorbs at 534 cm⁻¹ in an FTIR spectrum?
A band near 534 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
Përgjigje e shpejtë
A band near 534 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.
Caktime të mundshme të grupeve funksionale
| Grup funksional | Fakte mbështetëse | Burimet e cituara | Besueshmëri e lartë |
|---|---|---|---|
| Hydroxyl (O-H) | 6 | 5 | 1,0 |
| Methacrylate | 5 | 5 | 1,0 |
| Acetate | 5 | 5 | 1,0 |
| C-O single bond | 5 | 4 | 1,0 |
| Methoxy (OCH3) | 4 | 4 | 1,0 |
| Ketone | 2 | 2 | 1,0 |
| Ester | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Amide | 2 | 2 | 1,0 |
| Metal oxygen | 2 | 2 | 1,0 |
| N-O bond | 2 | 2 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
Renditja pasqyron provat e grumbulluara të literaturës, jo një rregull të vetëm autoritar. Gjithmonë konfirmoni në kontekstin e mostrës suaj.
Materialet e mundshme
| Material | Maja mbështetëse | Grupe të mbivendosura | Burimet e cituara |
|---|---|---|---|
| ZnO | 534, 1400, 3430 | Hydroxyl (O-H), Acetate, Methacrylate | 1 |
| TiO2 | 534, 1700, 1093 | Hydroxyl (O-H), Methacrylate, Acetate | 1 |
| silver nanoparticles | 534, 1636, 1631 | Hydroxyl (O-H), Methacrylate, Acetate | 1 |
| polypropylene | 534, 1030, 1600 | Methacrylate, Acetate, Hydroxyl (O-H) | 1 |
Materialet shfaqen vetëm kur i njëjti grup literature mbështet këtë brez dhe të paktën një pik karakteristik shtesë.
Logjika e spektrit
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 534 cm⁻¹ is usually not enough for material identification by itself.
Përdorimi në botën reale
Ky lloj pyetjeje është i zakonshëm në identifikimin e polimereve, skriningun e plastikës së panjohur, zgjidhjen e problemeve të kontrollit të cilësisë, verifikimin e materialeve të ricikluara dhe rishikimin e caktimit të pikut të mbështetur nga literatura.
Gabimet e zakonshme
- Trajtimi i një brezi të izoluar si provë e një materiali pa kontrolluar të paktën një ose dy pika mbështetëse.
- Duke injoruar mbivendosjen: grupe të shumta funksionale mund të kontribuojnë afër të njëjtit numër valor.
- Kalimi i vërtetimit kur aditivët, përzierjet, oksidimi ose ndotja mund të shtrembërojnë spektrin.
Këshillë për verifikim
Kur mbetet paqartësi, verifiko hipotezën me DSC, GC-MS ose TGA, veçanërisht për përzierjet, mostrat e degraduara dhe polimerët e mbushur.
Literatura pas këtyre caktimeve
-
Hydroxyl (O-H) besueshmëri 1,0
“1,629 for alkenyl stretch, 1,407 for phenol or cm-1 From the stock solution, the experimentalbioassaymedia was tertiary alcohol, OH bend, 1,032 for cyclohexane ring cm-1 C-I diluted using Milli Q water as a solvent to the desired convibrati”
Marimuthu 等 - 2013 - Eco-friendly microbial route to synthesize cobalt DOI: 10.1007/s00436-013-3601-2 -
Acetate besueshmëri 1,0
“The peak at around 533.5eV groups.[25] to further explain the influence of FePP on high temperature can be attributed to -Oin C-O-C, C-O-P, or C-OH”
Synergistic effects of ferric pyrophosphate (FePP) in intumescent flameretardant polypropylene DOI: 10.1002/pat.1590 -
C-O single bond besueshmëri 1,0
“As is also seen from Figure 3e,f, the intensity decrease in the peak at 533.6 eV related to C-OH means the existence of intramolecular or intermolecular dehydration reactions, which happen more”
Porous Structure of -Cyclodextrin for CO2 Capture: Structural Remodeling by Thermal Activation DOI: 10.3390/molecules27217375 -
besueshmëri 1,0
“The relatedtotheZneObond.Thepeak at534.07eVisassociatedwith decrease in absorbance peak intensityalso indicates the stabilityof loosely bonded oxygen atoms such as the hydroxy group on the the BTA molecule after loading [33].”
Effect of the modified hybrid particle on the corrosion inhibition performance of polyolefin based coatings for carbon steel DOI: 10.1016/j.jsamd.2022.100466 -
besueshmëri 1,0
“Two bands, at 534 (-17) and 440 s cm-1, c (-13) are assigned to ν(Fe-NO) and δ(Fe-NO) modes, respectively, even though r”
Hayashi 等 - 2009 - Accommodation of Two Diatomic Molecules in Cytochr DOI: 10.1021/bi801915r. -
N-O bond besueshmëri 1,0
“peaks in PAO at 533.9, 401.9, and 283.7 eV were related to -CN-O.”
Huang 等 - 2021 - High Selective Isomerization of Glucose to Fructos DOI: 10.1021/acsomega.1c02577 -
Metal oxygen besueshmëri 1,0
“M-O-M The peak at 533.70 eV corresponds to the bond, at 713.06 and 725.55 eV are called satellite peaks for Fe 2p 3/2 Fe+3”
Iqbal 等 - 2023 - Reduced Graphene Oxide-Modified Spinel Cobalt Ferr DOI: 10.1021/acsomega.2c06636 -
Acetate besueshmëri 1,0
“Even though UV-irradiated TNW caused the most prominent chemical changes (c and d in Figure S8), we noted some similarities in the spectra of TNW samples under dark and UV light: (i) increase in the P 2p peak at 134.5 eV and O 1 s peak at 5”
Thorn-like TiO2 nanoarrays with broad spectrum antimicrobial activity through physical puncture and photocatalytic action DOI: 10.1038/s41598-019-50116-0
Keni një spektër me këtë brez?
Ngarkoni spektrin tuaj FTIR dhe merrni një raport të plotë interpretimi — caktim i pikut me citime literaturë, përputhje biblioteke dhe një zinxhir provash të vlerësuar me besueshmëri — në sekonda.