What absorbs at 2919 cm⁻¹ in an FTIR spectrum?
A band near 2919 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 8 cited sources
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Alkyl C-H | 22 | 19 | 1.0 |
| Hydroxyl (O-H) | 2 | 1 | 0.9 |
| Methyl | 1 | 1 | 0.9 |
排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。
這些指派背後的文獻
-
信心 1.0
“Characteristic absorption peak of long alkyl chain.”
Asghar 等 - 2011 - Comparative Solid Phase Photocatalytic Degradation DOI: 10.1155/2011/461930 -
Alkyl C-H 信心 0.9
“Explicit assignment: 'peaks at 2919 and 2846 belong to CH'”
Wang 等 - 2023 - Surface-Modified TiO2@SiO2 Nanocomposites for Enha DOI: 10.1021/acsomega.3c02679 -
Alkyl C-H 信心 0.9
“explicit assignment”
Yuan 等 - 2015 - Hydrophobic effect of silica functionalized with s DOI: 10.1007/s12039-015-0965-0 -
Alkyl C-H 信心 0.9
“Explicit assignment: 'bands with maxima at 2954 and 2919 correspond to CH stretching vibrations'.”
Broncova 等 - 2021 - Optimization of Electrochemical Visualization of L DOI: 10.3390/polym13193220 -
信心 0.9
“Explicit assignment in text.”
Chatterjee 等 - 2019 - Dual-responsive (pHtemperature) Pluronic F-127 hy DOI: 10.1038/s41598-019-48254-6 -
Alkyl C-H 信心 0.9
“Text: 'band at 2919.30 cm-1 indicates CH symmetrical and CH2 asymmetrical stretching'.”
Chen 等 - 2019 - Efficient Degradation of High-Molecular-Weight Hya DOI: 10.3390/molecules24030617 -
Alkyl C-H 信心 0.9
“Symmetric and asymmetric stretching vibrations of CH2/CH3.”
Dhulipalla 等 - 2023 - Development and Characterization of Coconut Oil Ol DOI: 10.5650/jos.ess22398 -
信心 0.9
“Explicit assignment”
Durak 等 - 2021 - Changes in Chemical Composition and Accumulation o DOI: 10.3390/ijms22020511
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