What absorbs at 2175 cm⁻¹ in an FTIR spectrum?
A band near 2175 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
Möjliga identifieringar av funktionella grupper
| Funktionell grupp | Stödjande fakta | Citerade källor | Högsta förtroende |
|---|---|---|---|
| Silanol (Si-OH) | 2 | 1 | 1,0 |
| C#c | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Bronsted acid site | 1 | 1 | 1,0 |
| Bromine | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 0,9 |
| Methyl | 1 | 1 | 0,9 |
| Hydroxyl (O-H) | 1 | 0 | 1,0 |
| Lewis acid site | 1 | 0 | 1,0 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
Litteratur bakom dessa identifieringar
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Bromine förtroende 1,0
“FULL PAPER cm-1, cm-1, a signal centred at 2175 due to the stretching mode of CO mode, which in the liquid phase appears at 1611 is very interacting with Brønsted acid sites, is present in all spectra, sensitive to the acidity of the OH sit”
Erigoni 等 - 2016 - Creating Accessible Active Sites in Hierarchical M DOI: 10.1038/ncomms9633. -
C#c förtroende 1,0
“Characterization of Isolated Strains cm-1, 2175.12 which is the seventh peak, is due to the vibrations of alkynes (carbon-carbon triple bond).”
Shakeri 等 - 2022 - Biosynthesis of Selenium Nanoparticles and Evaluat DOI: 10.1155/2022/4118048 -
förtroende 0,9
“Single band centered at ~2175 cm-1 for free CNR.”
Blouin 和 Olson - 2010 - The Stretching Frequencies of Bound Alkyl Isocyani DOI: 10.1021/bi100172c. -
Methyl förtroende 0,9
“Symmetric CH3 stretching and asymmetric CH2 stretching”
A comparison of chitosan properties after extraction from shrimp shells by diluted and concentrated acids DOI: 10.1016/j.heliyon.2020.e03486 -
Silanol (Si-OH) förtroende 0,8
“Band at 2175 for acetonitrile on silanols”
In Situ FT-IR Characterization of CuZnZr/Ferrierite Hybrid Catalysts for One-Pot CO2-to-DME Conversion DOI: 10.3390/ma11112275 -
förtroende 0,8
“Text: 'band at 2175 and the CuN'”
Santoro 等 - 2015 - Synthesis, characterization and cellular location DOI: 10.1039/c4dt03598d
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