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
Mabilis na sagot
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.
Mga posibleng pagtatalaga ng functional-group
| Grupong functional | Mga sumusuportang katotohanan | Mga nasiping sanggunian | Pinakamataas na kumpiyansa |
|---|---|---|---|
| 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 |
Ang pagraranggo ay sumasalamin sa naipon na ebidensya ng literatura, hindi isang solong awtoritatibong tuntunin. Palaging kumpirmahin laban sa konteksto ng iyong sample.
Mga posibleng materyales
| Materyal | Sumusuportang mga peak | Mga overlapping na grupo | Mga nasiping sanggunian |
|---|---|---|---|
| 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 |
Ang mga materyales ay ipinapakita lamang kapag ang parehong literatura pool ay sumusuporta sa banda na ito at hindi bababa sa isang karagdagang katangian na tuktok.
Logic ng spectrum
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.
Paggamit sa totoong mundo
Ang uri ng query na ito ay karaniwan sa pagtukoy ng polymer, screening ng hindi kilalang plastic, pag-troubleshoot ng QC, pag-verify ng recycled na materyal, at pagsusuri ng pagtatalaga ng peak na may suporta ng literatura.
Mga karaniwang pagkakamali
- Pagtrato sa isang nakahiwalay na banda bilang patunay ng isang materyal nang hindi sinusuri ang hindi bababa sa isa o dalawang sumusuportang peak.
- Hindi pinapansin ang overlap: maraming functional group ang maaaring mag-ambag malapit sa parehong wavenumber.
- Pag-laktaw sa pagpapatunay kapag ang mga additives, blends, oxidation, o contamination ay maaaring mag-distort ng spectrum.
Payo sa pagpapatunay
Kapag nananatili ang kalabuan, patunayan ang hypothesis gamit ang DSC, GC-MS, o TGA, lalo na para sa mga blend, degraded na sample, at filled polymers.
Literatura sa likod ng mga pagtatalagang ito
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kumpiyansa 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) kumpiyansa 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) kumpiyansa 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 -
kumpiyansa 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) kumpiyansa 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) kumpiyansa 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 -
kumpiyansa 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 -
kumpiyansa 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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