What absorbs at 466 cm⁻¹ in an FTIR spectrum?
A band near 466 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 466 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 |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 9 | 8 | 1,0 |
| Silicon (Si) | 4 | 4 | 1,0 |
| Siloxane (Si-O-Si) | 4 | 4 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Metal oxygen | 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 |
|---|---|---|---|
| SiO2 | 466, 1739, 699 | Silicon-oxygen (Si-O), Silicon (Si), Siloxane (Si-O-Si) | 2 |
| Silica | 466, 1100, 1080 | Silicon-oxygen (Si-O), Silicon (Si), Siloxane (Si-O-Si) | 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 466 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
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vertrouwen 1,0
“The [18] located the spectra region at 466 cm-1 and attributed it to the Ti-C vibration.”
Effect of Microstructural and Tribological Behaviors of Sputtered Titanium Carbide Thin Film on Copper Substrate DOI: 10.3390/ma16010174 -
Hydroxyl (O-H) vertrouwen 1,0
“465 PC1, PCB1), (P, PC2, PCB2), (P, PC3, PCB3) and (P, OPS, MRP, RF) predominantly showed 466 characteristic peaks of vibrationally active chemical groups those likely corresponding to hydroxyl USC (cm-1).”
Evaluation of structural integrity and functionality of commercial pectin based edible films incorporated with corn flour, beetroot, orange peel, muesli and rice flour DOI: 10.1016/j.foodhyd.2019.01.022 -
Silicon (Si) vertrouwen 1,0
“The absorption bands of RHA at cm-1 cm-1 466 is ascribed to Si-O distortion, 800 corresponds to Si-O bending, and Si-O-Si stretching appeared cm23.”
Rice husk derived Aminated Silica for the efficient adsorption of different gases DOI: 10.1038/s41598-020-76460-0 -
vertrouwen 1,0
“The absorption peak at 795 was documented in the Si-O-Si group, cm-1 and the detected peak was 466 in the Si-O-Si group [51,52].”
Sustainable Remedy Waste to Generate SiO2 Functionalized on Graphene Oxide for Removal of U(VI) Ions DOI: 10.3390/su14052699 -
Silicon-oxygen (Si-O) vertrouwen 1,0
“The absorption bands at 1097, 1037, 802 and 774 on cm-1 the IR spectra of RHA and WG are assigned to the O-Si-O in the SiO tetrahedron and the band at 466 is”
Lancellotti 等 - 2015 - Geopolymers An option for the valorization of inc DOI: 10.1016/j.ceramint.2014.10.008 -
Silicon-oxygen (Si-O) vertrouwen 1,0
“The bands at around 466 cm-1 for FA-1 and FA-2 are connected with the bending vibrations of O-Si-O present in the silicate tetrahedron [31].”
Structural Characterizations of Aluminosilicates in Two Types of Fly Ash Samples from Shanxi Province, North China DOI: 10.3390/min9060358 -
vertrouwen 1,0
“The Al-O-Si bending band appeared at 520 cm-1 and Si-O-Si bending at 466 cm-1 [63].”
The Antimicrobial Properties of Modified Pharmaceutical Bentonite with Zinc and Copper DOI: 10.3390/pharmaceutics13081190 -
vertrouwen 1,0
“For the test sample, unlike the samples from the calibration set, the Si-O (SiO 2) strain cm-1 vibration absorption band at 466 was noted, which also corresponds to a relatively”
Identification of the Elemental Composition of Granulated Blast Furnace Slag by FTIR-Spectroscopy and Chemometrics DOI: 10.3390/pr10112166
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