What absorbs at 811 cm⁻¹ in an FTIR spectrum?
A band near 811 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 5 cited sources
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 2 | 2 | 0,9 |
| Alkene (C=C) | 2 | 2 | 0,9 |
| Siloxane (Si-O-Si) | 1 | 1 | 0,95 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
Litteratur bag disse tildelinger
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Siloxane (Si-O-Si) tillid 0,95
“Text: 'two bands at 811 and 1101 cm-1 correspond to Si-O-Si symmetric stretching and Si-O-Si asymmetric stretching'”
Vuong Xuan Bui 等 - 2019 - Investigation of Bioactive Glass-Ceramic 60SiO(2)- DOI: 10.1155/2019/1528326 -
Alkene (C=C) tillid 0,9
“Same assignment as 1504 cm-1.”
Dani 等 - 2017 - Click-based porous cationic polymers for enhanced DOI: 10.1039/x0xx00000x -
Silicon-oxygen (Si-O) tillid 0,9
“Assigned to Si-O band in C-S-H spectra.”
Mojumdar 和 Raki - 2006 - Preparation, thermal, spectral and microscopic stu DOI: 10.1007/s10973-005-7353-9 -
Alkene (C=C) tillid 0,9
“Explicit assignment: '811 cm-1. (s, mono. sub. alkene bending C=C)'”
Rezende 等 - 2020 - Efficient internal plasticization of poly(vinyl ch DOI: 10.1016/j.polymer.2020.122473 -
Silicon-oxygen (Si-O) tillid 0,9
“asymmetric stretching of O-Si-O”
Shen 等 - 2018 - Efficient Adsorption of Pb(II) from Aqueous Soluti DOI: 10.3390/polym10121383
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