What absorbs at 2874 cm⁻¹ in an FTIR spectrum?
A band near 2874 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
Possible functional-group assignments
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
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confidence 1.0
“Explicit assignment: 'CH sym vibration (2874)'”
Shi 等 - 2018 - Biochemical alterations of Candida albicans during DOI: 10.1039/c8an01452c -
confidence 1.0
“Explicit assignment: 'assigned to ... vsCH3'”
Ducic 等 - 2023 - Monitoring oocyte-based human pluripotency acquisi DOI: 10.1016/j.saa.2023.122713 -
Methyl confidence 1.0
“Explicit assignment in text”
Ye 等 - 2016 - The impact of the HbA1c level of type 2 diabetics DOI: 10.1038/srep33352 -
confidence 0.9
“Explicit assignment in text”
Cestari 等 - 2022 - Silk fibroin nanofibers containing chondroitin sul DOI: 10.1016/j.jddst.2022.103221) -
Alkyl C-H confidence 0.9
“Explicit assignment in text.”
Kaewprachu 等 - 2022 - Mechanical and Physicochemical Properties of Compo DOI: 10.3390/polym14091872 -
Alkyl C-H confidence 0.9
“Explicit assignment: 'C-H stretch around 2874'.”
Kaneko 等 - 2016 - Simultaneous small-angle neutron scattering and Fo DOI: 10.1107/S160057671601178X -
confidence 0.9
“Explicit assignment in text”
Khalil 等 - 2021 - Synthesis of Chitosan-La2O3 Nanocomposite and Its DOI: 10.3390/molecules26123689 -
confidence 0.9
“Band at 2874 cm-1 assigned to m(CH) of ethoxy.”
Rasko 和 Kiss - 2005 - Adsorption and surface reactions of acetaldehyde o DOI: 10.1007/s10562-004-3752-y
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