What absorbs at 465 cm⁻¹ in an FTIR spectrum?
A band near 465 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
Quick answer
A band near 465 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.
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 9 | 6 | 1,0 |
| Silicon (Si) | 4 | 3 | 1,0 |
| Metal oxygen | 2 | 2 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Chlorine | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Amide | 1 | 0 | 1,0 |
| Silicon silicon | 1 | 0 | 1,0 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Spectrum logic
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 465 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Bibliographie derrière ces attributions
-
confiance 1,0
“cm-1), Surprisingly, the signature of quartz (strong narrow Si-O bending peak at ~465 a very common mineral of a pottery body, is not easily detected by Raman scattering, although it is present as a minor phase in the XRPD (Figures 5, A1 an”
Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite DOI: 10.3390/ma13163597 -
confiance 1,0
“Rodriguez-Fuentes et al., are attributed to asymmetric 1635cm-1 465cm-1 O-H 1998;”
Dikmen 等 - 2020 - Characterization of Ag-exchanged clinoptilolite tr DOI: 10.1180/clm.2020.33 -
Silicon-oxygen (Si-O) confiance 1,0
“The band at 465 belongs to cm-1 cm-1, cm-1 cm-1 bending vibration of O-Si-O.”
Elwan 等 - 2018 - DOI: 10.5028/jatm.v10.935 -
Alkyl C-H confiance 1,0
“On the other hand, the major band around 465 in be achieved: the ratio between the intensity of the major CH stretching envelope (2800all the NP spectra indicates formation of CeO 2.”
Towards the Development of Antioxidant Cerium Oxide Nanoparticles for Biomedical Applications: Controlling the Properties by Tuning Synthesis Conditions DOI: 10.3390/nano11020542 -
confiance 1,0
“Compared with Figure 3b, the new endothermic peaks at 465 and 530 °C should be related to the reaction of LiBH4 and the added Al.”
He 等 - 2019 - The Dehydrogenation Mechanism and Reversibility of DOI: 10.3390/met9050559 -
confiance 1,0
“463 and the precursors, MK and SSA, are given in In the spectra of the MK sample, cm1, cm-1 cm-1 464 the bands at 1032 424 and 534 are associated with the tetra-coordinated 465 Si or Al asymmetric stretching vibration of the Si-O-T group (T”
Istuque 等 - 2019 - Effect of sewage sludge ash on mechanical and micr DOI: 10.1016/j.conbuildmat.2019.01.093 -
confiance 1,0
“NI2 NI3 NI4 (Figure 4b) recorded on several samples from the same point also showed some differ- [8,37,38] [37,38] [32,37] [32] [36] [39] ences, but observed bands at 465, 523 and 608 cm-1 can be ascribed to presence of copper 87 88 (s) and”
An Electrochemical and Spectroscopic Study of Surfaces on Bronze Sculptures Exposed to Urban Environment DOI: 10.3390/ma14082063 -
confiance 1,0
“6 of 17 709.55 C=C bending Strong Alkene 556.909 C-Cl stretching Strong Halo compound 464.62”
Isolation and Characterization of a Novel Actinomycete Isolated from Marine Sediments and Its Antibacterial Activity against Fish Pathogens DOI: 10.3390/antibiotics11111546
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