What absorbs at 3750 cm⁻¹ in an FTIR spectrum?
A band near 3750 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
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Hydroxyl (O-H) | 5 | 5 | 0,9 |
| Alkyl C-H | 1 | 1 | 0,7 |
| Silanol (Si-OH) | 1 | 0 | 0,9 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Bibliographie derrière ces attributions
-
confiance 0,9
“Text: 'Sharp IR peaks at 3750 are attributed ... to the vibration of isolated surface silanol groups.'”
Almohammadi 等 - 2020 - Ti-Doped SBA-15 Catalysts Used in Phenol Oxidation DOI: 10.1021/acsomega.9b03530 -
Hydroxyl (O-H) confiance 0,9
“Band at 3750 cm-1 corresponds to OH stretching vibration.”
Dar 等 - 2022 - Efficacy of Various Types of Berries Extract for t DOI: 10.1155/2023/9815767 -
Hydroxyl (O-H) confiance 0,9
“OH stretching band between 3750 and 3000 cm-1”
Turksoy 等 - 2021 - Behavior of semolina, hard, soft wheat flour dough DOI: 10.1016/j.cofs.2018.10.007 -
confiance 0,8
“Dominant peak caused by hydroxy compound”
Laksanawati 等 - 2016 - Mid - infrared transmission of polycrystalline (La DOI: 10.1088/1742-6596/776/1/012049 -
confiance 0,8
“Broadband peak at 3750-3200 cm-1 due to inter/intra molecular hydrogen bonding.”
Khan 等 - 2022 - Multifunctional Arabinoxylan-functionalized-Graphe DOI: 10.3389/fbioe.2022.865059 -
Hydroxyl (O-H) confiance 0,8
“Characteristic for surface OH region.”
Shah 等 - 2021 - Efficient removal of 2-chlorophenol from aqueous s DOI: 10.1007/s13201-021-01372-x -
Hydroxyl (O-H) confiance 0,8
“broad O-H band at 3000-3750”
Starowicz 等 - 2014 - Alumina-based nanoparticles obtained by anodic dis DOI: 10.1007/s10008-014-2447-6 -
confiance 0,7
“Text: 'bands between 3500 and 3000 cm-1 are assigned to the stretch'”
Dresch 等 - 2023 - DIFFERENT TREATMENTS OF PEARL MILLET BIOMASS FOR C DOI: 10.3390/app11104693
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