What absorbs at 3690 cm⁻¹ in an FTIR spectrum?
A band near 3690 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 7 cited sources
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Hydroxyl (O-H) | 6 | 6 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
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
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Hydroxyl (O-H) confiance 1,0
“Band centred around 3690 assigned to O-H stretching vibration cm-1 [hydroxyl or water] present in the glass.”
Red light Emission from Europium doped Zinc Sodium Bismuth Borate Glasses DOI: 10.1016/j.physb.2017.09.113 -
Hydroxyl (O-H) confiance 1,0
“These results are consistent with those of HREELS.23 On TMIn on the GaAs(100) surface measured by (cid:24)3690 cm-1 the HO-covered surface, the OH stretch peak was found to be removed effectively by TMIn due to facile reaction, as will be d”
Wang 和 Lin - 2005 - Reactions of trimethylindium on TiO2 nanoparticles DOI: 10.1021/jp050892v -
Hydroxyl (O-H) confiance 1,0
“LLM confirmed rule peak-group candidate”
Morphology and Selected Properties of Modified Potato Thermoplastic Starch DOI: 10.3390/polym15071762 -
Hydrogen bond confiance 1,0
“In the hydrogen-bond region band at 3690 spectra of soil fractions, a similar pattern is observed for all the (3775-3100cm-1),RSDvaluesforthebandintegralsarehigher”
Krivoshein 等 - 2022 - FTIR Photoacoustic and ATR Spectroscopies of Soils DOI: 10.1021/acsomega.1c05702 -
confiance 1,0
“In the sample, a narrow absorption band at 3690 cm-1 was due to the stretching mode of the oxygen-hydrogen present.”
Prewetting Induced Hydrophilicity to Augment Photocatalytic Activity of Nanocalcite @ Polyester Fabric DOI: 10.3390/polym14020295 -
Hydroxyl (O-H) confiance 1,0
“The characteristic gether with the carbonyl group at 1737 formed on sample WP1iii_2A showed the distribution of calcium cm-1 cm-1, andtheband at1032 sugbands of OH stretching at3690”
Sotiropoulou 等 - 2018 - Advanced analytical investigation on degradation m DOI: 10.1016/j.microc.2018.03.007 -
Hydroxyl (O-H) confiance 1,0
“sievedto125µm resolution: 997.1 Si-Oplanarstretching 3617.4 OH-stretching 3690.1”
FTIR as a Method for Qualitative Assessment of Solid Samples in Geochemical Research: A Review DOI: 10.3390/molecules27248846
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