What absorbs at 517 cm⁻¹ in an FTIR spectrum?
A band near 517 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 517 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 | 3 | 3 | 1.0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1.0 |
| Silicon (Si) | 2 | 2 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Metal carbon | 1 | 1 | 0.9 |
| Sulfur | 1 | 1 | 0.8 |
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 |
|---|---|---|---|
| ZnO | 517, 1400, 3430 | Metal oxygen, Methoxy (OCH3) | 1 |
| hematite | 517, 1030, 469 | Silicon-oxygen (Si-O), Silicon (Si), Metal oxygen | 1 |
| Kaolinite | 517, 3696, 693 | Silicon-oxygen (Si-O), Silicon (Si), Metal oxygen | 1 |
| ZnO nanoparticles | 517, 1219, 1726 | Metal oxygen | 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 517 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
-
kumpiyansa 1.0
“9 b, it can be 2 cm-1 seen a bare TiO displays abroad bandbelow 517 due to 2 the vibration of Ti-O-Ti bonds in TiO (Djellabi et al.”
New composite material based on Kaolinite, cement, TiO2 for efficient removal of phenol by photocatalysis DOI: 10.1007/s11356-021-13150-y -
Metal oxygen kumpiyansa 1.0
“The absorption band at 517 cm-1 vibration of Zn-O bonds and confirms the formation of materials [44].”
Innovative Investigation of Zinc Oxide Nanoparticles Used in Dentistry DOI: 10.3390/cryst12081063 -
Acetate kumpiyansa 1.0
“646.78 CS stretching - 1384.21 Asymmetric COC stretching of lignin 517.10 - Out of plane bending of OH C-O stretching of acetyl group in lignin and hemicel- -”
Biodegradable Green Composites: Effects of Potassium Permanganate (KMnO4) Treatment on Thermal, Mechanical, and Morphological Behavior of Butea Parviflora (BP) Fibers DOI: 10.3390/polym15092197 -
kumpiyansa 1.0
“below new bands appeared at 517 and 303cm-1, The bond distances of the complex obtained in this work assigned to the Zn-N stretching, and at 317 and”
Cordeiro 等 - 2019 - A Novel Zn-II Complex Bearing Two Monodentate (4-M DOI: 10.1155/2019/7876495 -
Silicon (Si) kumpiyansa 1.0
“peaks at 797, 779 and 693 For the same samples, the sharp band at 456 and cm-1-this the peak at 517 last one observed only in PK11552-can be ascribed to Si-O bending vibrations [31].”
Assessment of Easily Accessible Spectroscopic Techniques Coupled with Multivariate Analysis for the Qualitative Characterization and Differentiation of Earth Pigments of Various Provenance DOI: 10.3390/min12060755 -
kumpiyansa 1.0
“The presence of tetrahedral titanium in the TiO2/Al-ZSM-12 sample, which forms SiO-Ti bonds, is confirmed by bands with maxima at 517 cm-1 (Raman, Figure 4b) [42,43] and 953 cm-1 (DRIFTS, Figure 4d) [44,45].”
Synthesis and Investigation of Zeolite TiO2/Al-ZSM-12 Structure and Properties DOI: 10.3390/catal13020216 -
Metal carbon kumpiyansa 0.9
“Explicit assignment for R”
Ashfaq 等 - 2016 - SYNTHESIS AND BIOLOGICAL ACTIVITY OF NEW SERIES OF DOI: 10.5935/0100-4042.20150171 -
Sulfur kumpiyansa 0.8
“Bands due to s(C=O).”
Hyperoxaluria is related to whewellite and hypercalciuria to weddellite: What happens when crystalline conversion occurs? DOI: 10.1016/j.crci.2015.12.011
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