What absorbs at 3513 cm⁻¹ in an FTIR spectrum?
A band near 3513 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 2 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Silicon (Si) | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
N h confidence 1.0
“2c), the peak is shown in 3513 and 3429 2@KIT-6@2-ATP@CuI corresponding to the NH stretching vibration.”
Fe3O4@SiO2@KIT-6@2-ATP@CuI as a catalyst for hydration of benzonitriles and reduction of nitroarenes DOI: 10.1038/s41598-023-34409-z -
Hydroxyl (O-H) confidence 1.0
“LLM confirmed rule peak-group candidate”
Potter 等 - 2014 - Role of Isolated Acid Sites and Influence of Pore DOI: 10.1021/cs501092b
Have a spectrum with this band?
Upload your FTIR spectrum and get a full interpretation report — peak assignments with literature citations, library matches, and a confidence-rated evidence chain — in seconds.
Interpret my spectrum