What absorbs at 820 cm⁻¹ in an FTIR spectrum?
A band near 820 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
Mulige funksjonelle gruppe-tilordninger
| Funksjonell gruppe | Støttende fakta | Siterte kilder | Toppkonfidens |
|---|---|---|---|
| Oxygen heterocycle | 2 | 2 | 1.0 |
| Sulfate (SO4) | 1 | 1 | 0.95 |
| Alkyl C-H | 1 | 1 | 0.9 |
| Silicon carbon | 1 | 1 | 0.9 |
| Silicon-oxygen (Si-O) | 1 | 1 | 0.9 |
| Metal oxygen | 1 | 0 | 0.9 |
Rangeringen gjenspeiler akkumulert litteraturbevis, ikke en enkelt autoritativ regel. Bekreft alltid mot prøvekonteksten din.
Litteratur bak disse tilordningene
-
Oxygen heterocycle konfidens 1.0
“Peak of an epoxy group at 820 cm-1”
Abdullah 等 - 2016 - Polyesters Based on Linoleic Acid for Biolubricant DOI: 10.1371/journal.pone.0151603 -
Sulfate (SO4) konfidens 0.95
“Explicit assignment: 'new absorption bands at 820 and 1260 ... introduction of the sulfate groups'”
Levdansky 等 - 2021 - Sulfation of arabinogalactan with sulfamic acid un DOI: 10.1007/s00226-021-01341-2 -
Silicon-oxygen (Si-O) konfidens 0.9
“Si-O bending”
Chabane 等 - 2009 - Characterization of SiOF thin films deposited by P DOI: 10.4028/www.scientific.net/MSF.609.59 -
konfidens 0.9
“Explicit assignment: 'deformation bands ... 820 cm-1 ... originating from PA'.”
Koziel-Trabska 等 - 2023 - Characterization of New Polymer Material of Amino- DOI: 10.3390/membranes13040447 -
Silicon carbon konfidens 0.9
“Text: 'Si-CH3 rocking (820 cm-1)'”
Nakajima 等 - 2018 - Femtosecond Laser-Based Modification of PDMS to El DOI: 10.3390/nano8070558 -
konfidens 0.9
“Explicit assignment in text: 'peak at 820 cm-1 corresponds to the vibration of an aromatic ring substituted at the positions 1 and 2'”
Paglia 等 - 2022 - Effect of ceramic nano-particles on the properties DOI: 10.1002/pc.26811 -
Alkyl C-H konfidens 0.9
“Explicit assignment: '820 cm (CH'”
Pianorsi 等 - 2017 - Organogels for the cleaning of artifacts DOI: 10.1515/pac-2016-0908 -
konfidens 0.9
“Text: 'The bands to 820 and 880 are due to the stretching'”
Severo 等 - 2016 - Preparation of Zinc Tungstate (ZnWO4) Particles by DOI: 10.1590/1980-5373-MR-2015-0100
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