What absorbs at 3005 cm⁻¹ in an FTIR spectrum?
A band near 3005 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 | 7 | 1.0 |
| Fatty acid | 3 | 3 | 1.0 |
| Alkene (C=C) | 3 | 2 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
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
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Alkyl C-H 置信度 1.0
“The peak at 3005 attributes to the stretching vibrations of C-H in cm-1 H-C=C and the peak at 718.8 corresponds to out-of-plane bending vibrations of ACCEPTED”
Liang 等 - 2017 - Thermo-stability and aging performance of modified DOI: 10.1016/j.matdes.2017.04.060 -
Alkyl C-H 置信度 1.0
“3005 attributed to =CH stretching vibrations indicates the presence of unsaturated fatty acids in glycerides and wax esters of sebaceous components.”
Optimization of Electrochemical Visualization of Latent Fingerprints with Poly(Neutral Red) on Brass Surfaces DOI: 10.3390/polym13193220 -
Alkyl C-H 置信度 1.0
“cm-1 increase in absorption and shaper peaks were obtained 1091.71 (C-O stretching), 1288.45 (C-O cm-1 and growth of nanoparticles was also enhanced but stretching) and 1334.74 (O-H bending), 1419.61 cm-1 cm-1 (C=C if concentration of subst”
Iqtedar 等 - 2020 - Biosynthesis, optimization and characterization of DOI: 10.24275/rmiq/Bio1605 -
Alkyl C-H 置信度 1.0
“~1080 glycogen (C-O stretching at ~1030 and protein phosphorylation (~970 cm-1, The high-region, between 3700-2800 can also be used for analysis, where information of water cm-1), cm-1), (-OH stretching at ~3275 protein (symmetric -NH stret”
Morais 等 - 2020 - Tutorial multivariate classification for vibratio DOI: 10.6084/m9.figshare.7607420.v1; -
Fatty acid 置信度 1.0
“Moreover, the other unsaturated lipid [21,22] and saturated fatty acid [22]) were loaded for PC1, which separated the cm-1 negative values of PC1 loading of the respective peaks at 3005 and 2956 (assigned as unsaturated positive score of th”
FTIR Microspectroscopy for the Assessment of Mycoplasmas in HepG2 Cell Culture DOI: 10.3390/app10113766 -
Alkyl C-H 置信度 1.0
“[13,30,32], 1376 a maximum at 3005 (bending symmetric vibration of This finding is due to the oil C-H bonds of CH”
Poiana 等 - 2015 - Use of ATR-FTIR spectroscopy to detect the changes DOI: 10.1515/chem-2015-0110 -
Alkene (C=C) 置信度 1.0
“The absorption band at 3005 in the spectrum of fatty esters (a) is attributed to unsaturated alkenes (-C=C-H), which has been completely disappeared in the spectrum of epoxidized fatty ester (b).”
Microwave-Assisted Catalytic Synthesis of Bio-Based Copolymers from Waste Cooking Oil DOI: 10.3390/ma10030315 -
置信度 1.0
“By blending of high cm-1 hydrolysis, oxidation, isomerization, and polymerization due unsaturated oils with palm olein, a clear shift of 3007 cm-1 to high temperature and absorption of water and oxygen band to 3005 occurs.”
Siddique 等 - 2015 - Effect of frying on the rheological and chemical p DOI: 10.1007/s13197-013-1124-6
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