What absorbs at 669 cm⁻¹ in an FTIR spectrum?
A band near 669 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
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| Siloxane (Si-O-Si) | 1 | 1 | 0,9 |
| Carbon dioxide | 1 | 1 | 0,9 |
| Alkyl C-H | 1 | 1 | 0,8 |
| Carbonate | 1 | 1 | 0,7 |
| Silicon-oxygen (Si-O) | 1 | 1 | 0,7 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
Litteratur bag disse tildelinger
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tillid 0,9
“Explicitly assigned to Si-O bonds from silicate minerals.”
Georgakopoulos 等 - 2003 - Study of low rank Greek coals using FTIR spectrosc DOI: 10.1080/00908310390232442 -
Carbon dioxide tillid 0,9
“explicit assignment”
Fedorkova 等 - 2018 - Synthesis and Characterization of Porous SulfurMW DOI: 10.20964/2018.01.67 -
Siloxane (Si-O-Si) tillid 0,9
“Si-O-Si bands at 669-671 cm-1.”
Mojumdar 和 Raki - 2006 - Preparation, thermal, spectral and microscopic stu DOI: 10.1007/s10973-005-7353-9 -
Alkyl C-H tillid 0,8
“Peak between 617 and 669 due to -CH stretching of methyl and methylene”
Chaudhary 等 - 2017 - Optimization of chromium and tannic acid bioremedi DOI: 10.1186/s13568-017-0504-0 -
Silicon-oxygen (Si-O) tillid 0,7
“Weak absorption peak related to vibration modes of Si-O band.”
Asgary 等 - 2021 - Magnetron sputtering technique for analyzing the i DOI: 10.1007/s00339-021-04892-0 -
Carbonate tillid 0,7
“Band attributed to carbonate.”
Khatem 和 Bakhti - 2013 - Study of factors controlling the sorption of diclo DOI: 10.2166/wqrjc.2013.059
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