What absorbs at 2857 cm⁻¹ in an FTIR spectrum?
A band near 2857 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 | 10 | 9 | 1.0 |
| Carbohydrate | 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
“They observed vibrations of C-H functional groups at 2856.67 cm-1 and 2926.11 cm-1.”
The Effect of High-Intensity Ultrasound and Natural Oils on the Extraction and Antioxidant Activity of Lycopene from Tomato (Solanum lycopersicum) Waste DOI: 10.3390/antiox11071404 -
Alkyl C-H 置信度 1.0
“The absorption bands at 2927, 2934, 2857, and are due to the stretching vibration of CH groups.”
Innovative Investigation of Zinc Oxide Nanoparticles Used in Dentistry DOI: 10.3390/cryst12081063 -
Alkyl C-H 置信度 1.0
“3 cm-1, 4716 8709 symmetric stretching vibration at 2876 the cm-1, CH symmetric stretching vibration at 2857 4777 9181 2 COOcm-1 the symmetric stretch band at 1391 and”
Wang 等 - 2012 - Differentiation in MALDI-TOF MS and FTIR spectra b DOI: 10.1186/1471-2180-12-182 -
Carbohydrate 置信度 1.0
“cm-1 al.[31] in the FTIR spectra of all samples, which according to Rosa et is assigned to C = O 1734 2857cm-1 in the spectrum of ketone due to hemicelluloses.”
Alghooneh 等 - 2017 - Characterisation of cellulose from coffee silversk DOI: 10.1080/10942912.2016.1253097 -
Alkyl C-H 置信度 1.0
“Spectrum of the PE film before irradiation show the 05 characteristic absorption peaks of long alkyl chain in the 2919cm-1, 2857cm-1, 1475cm-1, 715cm-1.”
Asghar 等 - 2011 - Comparative Solid Phase Photocatalytic Degradation DOI: 10.1155/2011/461930 -
Alkyl C-H 置信度 1.0
“As shown in Figure S4 (zoomed part), prominent cm-1 cm-1 O-H 1250 can be attributed to stretching, while bands are because of stretching bands at 1576, 1607, and 1628 cm-1 C-H are due to the stretching of at 2857 and 2924 vibrations of the”
Bir 等 - 2022 - Multifunctional Ternary NLPZnO@L-cysteine-grafted DOI: 10.1021/acsomega.2c04936 -
Alkyl C-H 置信度 1.0
“2857 cm-1 attributed to the MZ1 MZ1 MZ2 MZ2 CH of the alkane chain.”
Effect of the Zwitterion, p(MAO-DMPA), on the Internal Structure, Fouling Characteristics, and Dye Rejection Mechanism of PVDF Membranes DOI: 10.3390/membranes10110323 -
Alkyl C-H 置信度 1.0
“additional, sharp symmetric CH2 stretching band maximum Triterpenoid resins Triterpenoid resins consist of mixat2857cm-1 .Moderatelystrong𝛿CHbands,allcharacterized tures of triterpenoid molecules with mainly pentacyclic”
Invernizzi 等 - 2018 - Mid and Near-Infrared Reflection Spectral Database DOI: 10.1155/2018/7823248
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