What absorbs at 3138 cm⁻¹ in an FTIR spectrum?
A band near 3138 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 3 cited sources
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| Alkyl C-H | 2 | 2 | 1,0 |
| Methyl | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Ammonium | 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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Aromatic ring tillid 1,0
“cm-1 The functional groups for synthesized ZnO NPs were 3852 for H-H weak peak, cm-1 cm-1 3138 for aromatic C-H extend, and 1648 for Aromatic ring stretch.”
An Investigation of the Cytotoxicity and Caspase-Mediated Apoptotic Effect of Green Synthesized Zinc Oxide Nanoparticles Using Eclipta prostrata on Human Liver Carcinoma Cells DOI: 10.3390/nano5031317 -
Alkyl C-H tillid 1,0
“The strong and sharp peak at 3138 cm-1 indicates C-H bonding that is likely to be from the methyl group of DMSO2.”
The Green Synthesis of 2D Copper Nanosheets and Their Light Absorption DOI: 10.3390/ma14081926 -
Ammonium tillid 0,95
“Explicit assignment in text: '3138 cm-1 NH3+ (N-H stretch)'”
Szostak 等 - 2019 - Nanoscale mapping of chemical composition in organ DOI: 10.1126/sciadv.aaw6619
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