What absorbs at 2942 cm⁻¹ in an FTIR spectrum?
A band near 2942 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
Mga posibleng pagtatalaga ng functional-group
| Functional group | Mga sumusuportang katotohanan | Mga nasiping sanggunian | Pinakamataas na kumpiyansa |
|---|---|---|---|
| Alkyl C-H | 5 | 5 | 0.95 |
| Methyl | 1 | 1 | 0.95 |
Ang pagraranggo ay sumasalamin sa naipon na ebidensya ng literatura, hindi isang solong awtoritatibong tuntunin. Palaging kumpirmahin laban sa konteksto ng iyong sample.
Literatura sa likod ng mga pagtatalagang ito
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Methyl kumpiyansa 0.95
“Explicit assignment: 'At 2942 a methyl, methylene stretching vibration cm-1 was observed.'”
Yuan 等 - 2018 - Purification of Tea saponins and Evaluation of its DOI: 10.1515/biol-2018-0008 -
Alkyl C-H kumpiyansa 0.9
“Explicit assignment”
Khairuddin 等 - 2016 - FTIR studies on the effect of concentration of pol DOI: 10.1088/1742-6596/776/1/012053 -
Alkyl C-H kumpiyansa 0.9
“Explicit assignment: bands at 2942, 2911, 2888, 2840 attributed to stretching vibrations of surface methoxy (ν C-H).”
Chrzan 等 - 2019 - Towards Methane Combustion Mechanism on Metal Oxid DOI: 10.1007/s11244-019-01143-8 -
Alkyl C-H kumpiyansa 0.9
“Text: C-H stretching vibration at 2942.”
Feng 等 - 2022 - Structural Analysis of Oxidized Sucrose and Its Ap DOI: 10.3390/polym14142842 -
Alkyl C-H kumpiyansa 0.8
“attributed to stretching vibrations of CH”
Kowalski 等 - 2019 - Synthesis and Effect of Structure on Swelling Prop DOI: 10.3390/polym11010114
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