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
Hiter odgovor
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.
Možne dodelitve funkcionalnih skupin
| Funkcionalna skupina | Podporna dejstva | Citirani viri | Najvišje zaupanje |
|---|---|---|---|
| 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 |
Razvrstitev odraža zbrane literaturne dokaze, ne enega avtoritativnega pravila. Vedno preverite glede na kontekst vašega vzorca.
Možni materiali
| Material | Podporni vrhovi | Prekrivajoče se skupine | Citirani viri |
|---|---|---|---|
| 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 |
Materiali so prikazani le, ko ista literaturna podlaga podpira ta pas in vsaj en dodatni karakteristični vrh.
Logika spektra
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.
Uporaba v resničnem svetu
Ta vrsta poizvedbe je pogosta pri identifikaciji polimerov, pregledovanju neznanih plastičnih mas, odpravljanju težav pri QC, preverjanju recikliranih materialov in literaturno podprtem pregledu dodelitev vrhov.
Pogoste napake
- Obravnavanje enega izoliranega pasu kot dokaza o materialu brez preverjanja vsaj enega ali dveh podpornih vrhov.
- Ignoriranje prekrivanja: več funkcionalnih skupin lahko prispeva blizu istega valovnega števila.
- Izpuščanje validacije, ko lahko dodatki, mešanice, oksidacija ali kontaminacija popačijo spekter.
Nasvet za preverjanje
Ko ostaja dvoumnost, potrdite hipotezo z DSC, GC-MS ali TGA, zlasti za mešanice, degradirane vzorce in polnjene polimere.
Literatura za temi dodelitvami
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zaupanje 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) zaupanje 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) zaupanje 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 -
zaupanje 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) zaupanje 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) zaupanje 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 -
zaupanje 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 -
zaupanje 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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