What absorbs at 477 cm⁻¹ in an FTIR spectrum?
A band near 477 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 6 cited sources
Mabilis na sagot
A band near 477 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 |
|---|---|---|---|
| Metal oxygen | 2 | 2 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| Nucleic acid | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
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 |
|---|---|---|---|
| Silica nanoparticles | 477, 1718, 2925 | Silicon-oxygen (Si-O), Alkyl C-H | 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 477 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
-
Metal oxygen kumpiyansa 1.0
“The first band band position is due to the difference in the discm-1 at 477.25 represents the vibration due to metal-oxygen tances for the octahedral and tetrahedral complexes.”
Influence of cobalt substitution on structural, optical, electrical and magnetic properties of nanosized lithium ferrite DOI: 10.1007/s10854-018-9744-2 -
kumpiyansa 1.0
“The cm-1 cm-1 peak observed at 477 and 620 can be assigned Experimental Fish and Acclimatization: The work was to Ni-O and Ni-O-H bond, respectively.”
Aziz 等 - 2021 - Effect of Engineered Nickel Oxide Nanoparticles on DOI: 10.29261/pakvetj/2021.044 -
Nucleic acid kumpiyansa 1.0
“The Raman spectrum of DNA TFs exhibited 6 O TiO 2] in the DNA and DNA-CT TFs increased due to the characteristic Raman bands centered at around 477, 678, 732, cto physical interactions between them.”
Dugasani 等 - 2019 - Optoelectronic properties of DNA thin films implan DOI: 10.1063/1.5063446 -
kumpiyansa 1.0
“SiO 2-NPs were suspended in saline solution, spectral bands detected were 477 for Si-O out of cm-1 cm-1 cm-1 plane deformation, 801 for Si-O bending, 970 for Si-OH stretching, 1097 for Si-O-Si asymmetric stretching (Figure 1b).”
Astrocytes Are More Vulnerable than Neurons to Silicon Dioxide Nanoparticle Toxicity in Vitro DOI: 10.3390/toxics8030051 -
Alkyl C-H kumpiyansa 1.0
“bending vibration bands were recognized at 601 and 477cm-1 The stretching mode energy responds to variations in unit [35], the bending of C-H was observed at 875 cm-1 cell volume via two mechanisms: shifts in bond length and [36].”
Ismail 等 - 2023 - The role of nanoparticles inclusion in monitoring DOI: 10.1007/s41779-023-00836-4 -
Carbohydrate kumpiyansa 1.0
“LLM confirmed rule peak-group candidate”
Vibrational and fluorescence spectroscopy to study gluten and zein interactions in complex dough systems DOI: 10.1016/j.crfs.2022.02.009
May spectrum ka ba na may ganitong band?
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