What absorbs at 1524 cm⁻¹ in an FTIR spectrum?
A band near 1524 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 5 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Amide | 2 | 2 | 0.9 |
| Protein beta sheet | 1 | 1 | 0.8 |
| Silicon-oxygen (Si-O) | 1 | 1 | 0.7 |
| Siloxane (Si-O-Si) | 1 | 1 | 0.7 |
| Metal oxygen | 1 | 1 | 0.7 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
confidence 1.0
“Explicitly assigned as G-peak in text.”
Ghafary 等 - 2017 - Simultaneous Gene Delivery and Tracking through Pr DOI: 10.1038/s41598-017-09890-y -
Amide confidence 0.9
“main amide II peak”
Li 等 - 2002 - Purification and structural characterization of th DOI: 10.1074/jbc.M202721200 -
Amide confidence 0.9
“Explicit assignment: CN stretching/NH bending modes of amide.”
Silva 等 - 2021 - DOI: 10.15446/rcciquifa.v50n2.91038 -
Protein beta sheet confidence 0.8
“Normally attributed to β-sheet.”
Tamburro 等 - 2005 - Supramolecular amyloid-like assembly of the polype DOI: 10.1074/jbc.M411617200 -
Metal oxygen confidence 0.7
“Functional vibrational bands.”
Herrera-Barros 等 - 2020 - Nickel adsorption from aqueous solution using lemo DOI: 10.1016/j.scp.2020.100299
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