What absorbs at 2968 cm⁻¹ in an FTIR spectrum?
A band near 2968 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Alkyl C-H | 7 | 6 | 1.0 |
| Methoxy (OCH3) | 2 | 2 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 0.8 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
-
Alkyl C-H 置信度 1.0
“Molecular hydrogen production can be taken as an overall stretching, CH and CH asymmetric stretching and the terminal 2 3 indicator of radiation stability and was found to be considerably CH 3HCH symmetric stretching correspond to FTIR band”
Gamma and heavy ion radiolysis of ionic liquids: A comparative study DOI: 10.1016/j.jnucmat.2014.06.056 -
Alkyl C-H 置信度 1.0
“42 wavenumber.39 cm-1 Peaks at 2967.62 and 2940.74 are antisymmetric stretching of terminal -CH and - 3 43 cm-1 CH of N-alkyl chains, respectively.”
Structural Dependence and Spectroscopic Evidence of Methane Dissolution in Ionic Liquids DOI: 10.1021/acs.jpcb.8b03178 -
置信度 1.0
“Fourier transform infrared spectroscopy (FTIR) spectra of these Pd nanoparticles cm(cid:1)1 & eCOOH membranes revealed that intensity of peaks related to group at 2968 PET membrane cm(cid:1)1 increases with functionalization time.”
Selective deposition of Pd nanoparticles in porous PET membrane for hydrogen separation DOI: 10.1016/j.ijhydene.2017.03.202 -
Methoxy (OCH3) 置信度 1.0
“The peaks at 2855 and 2968 cm-1 arise from molecular methanol, and the other two peaks are attributed to methoxy chemisorbed to the TiO 2 film surface.”
Wang 等 - 2003 - Molecular species on nanoparticulate anatase TiO2 DOI: 10.1021/la0345542 -
Acetate 置信度 1.0
“cm-1 ∼3275 stretching O-H symmetric cm-1 ∼3200-3550 symmetric and asymmetric vibrations attributed to water cm-1 ∼2968 CH3 stretching”
The Role of the Preanalytical Step for Human Saliva Analysis via Vibrational Spectroscopy DOI: 10.3390/metabo13030393 -
Protein 置信度 1.0
“1 shifting of 1650 cm 1336 cm The absorption peak at 2968 cm observed peak can be correlated with binding of extract proteins through the amine group.”
Kumar 等 - 2017 - A safe, efficient and environment friendly biosynt DOI: 10.1515/gps-2016-0146 -
Alkyl C-H 置信度 1.0
“(cm³/g Porevolume(cm 800 0.15 2880cm-1, (iii) The alkyl chain C-H vibrations at 0.1 2941cm-1, 2968cm-1, adsorbed {see and Figure 4(b) and”
Verma 等 - 2012 - Effect of Ultrasonic Irradiation on Preparation an DOI: 10.1155/2012/570719 -
Alkyl C-H 置信度 0.9
“Text: 'C-H cm-1 asymmetric vibration at ca. 2968'”
Jones 等 - 2010 - Caste-Specific Tyramides from Myrmicine Ants DOI: 10.1021/np900697s.
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