What absorbs at 2053 cm⁻¹ in an FTIR spectrum?
A band near 2053 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 1 cited source
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Nitrile | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 0 | 1.0 |
| Methacrylate | 1 | 0 | 1.0 |
| C-O single bond | 1 | 0 | 1.0 |
| Acetate | 1 | 0 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
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Nitrile confidence 1.0
“Also the signals at 2053 cm-1 26 and 2040 can be assigned to the H state and to the cyanide ligands, while the assignment of red 27 the other signals remains ambiguous.”
Morra 等 - 2016 - The effect of a C298D mutation in CaHydA [FeFe]-hy DOI: 10.1002/bab.1382.
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