What absorbs at 3387 cm⁻¹ in an FTIR spectrum?
A band near 3387 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 3 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Hydroxyl (O-H) | 4 | 2 | 0.9 |
| N h | 1 | 1 | 0.9 |
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 0.9
“Explicit assignment in text”
Sharma 等 - 2020 - Structural and physicochemical properties of Rheum DOI: 10.1049/iet-nbt.2019.0348 -
N h confidence 0.9
“Explicit assignment: 3387.15/cm correspond to N-H stretch (amines) and O-H stretch (alcohols)”
Usmani 等 - 2023 - Molecular Docking of Bacterial Protein Modulators DOI: 10.3390/molecules28020574 -
Hydroxyl (O-H) confidence 0.9
“OH- stretching”
Zeng 等 - 2020 - Efficient removal of As(V) from aqueous media by m DOI: 10.1038/s41598-020-65840-1
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