What absorbs at 3383 cm⁻¹ in an FTIR spectrum?
A band near 3383 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
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Hydroxyl (O-H) | 4 | 4 | 0.9 |
| N h | 2 | 2 | 0.9 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
confidence 0.9
“Explicit assignment in text: 'The peak of (v/v) ... 3383 cm-1'”
Tan 等 - 2011 - Preparation and characterization of APTES films on DOI: 10.1016/j.tsf.2011.01.068 -
confidence 0.9
“Broad absorption peak indicates O-H group.”
Afolabi 等 - 2021 - Evaluation of Lead (II) Removal from Wastewater Us DOI: 10.15244/pjoes/122449 -
Hydroxyl (O-H) confidence 0.9
“Explicit assignment: stretching vibration of hydroxyl OH.”
Long 等 - 2021 - Effect of Hot-pressing Process on Mechanical Prope DOI: 10.5552/drind.2017.1641 -
N h confidence 0.9
“Peak at 3382.85 assigned to N-H of tertiary amine.”
Odewunmi 等 - 2020 - Comparative Studies of the Corrosion Inhibition Ef DOI: 10.1021/acsomega.0c02345 -
Hydroxyl (O-H) confidence 0.9
“hydroxyl groups (O-H)”
Sondari 等 - 2018 - Characterization Edible Coating Made From Native a DOI: 10.1063/1.5082514 -
N h confidence 0.9
“Attributed to stretching of N-H group.”
Wojcik-Pastuszka 等 - 2023 - Influence of HA on Release Process of Anionic and DOI: 10.3390/ijms24065606 -
Hydroxyl (O-H) confidence 0.9
“Explicit assignment in text.”
Zhou 等 - 2011 - Metal adsorption by quasi cellulose xanthogenates DOI: 10.1016/j.biortech.2010.11.035
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