What absorbs at 2255 cm⁻¹ in an FTIR spectrum?
A band near 2255 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 |
|---|---|---|---|
| Amine primary | 1 | 1 | 1.0 |
| C#c | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Thiol | 1 | 1 | 1.0 |
| Alkyl C-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
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Alkyl C-H confidence 1.0
“All the spectra examined consist of typical absorption peaks at about 3300 cm-l by (OH stretching), 3295 cm-' ( h C - H stretching), 2950 cm-l (C-H stretching), Downloaded 2255 cm-l (C%C-hC stretching), 2120 cm-l (C%C stretching), 1360-1300”
LANGER 和 MOSS - 1993 - FTIR STUDIES OF TRIMETHYLENE LINKED BIS-DIACETYLEN DOI: 10.1080/10587259308030157 -
Thiol confidence 1.0
“The other bands observed at 2255 2550 and 3410 correspond to S-H,”
Green synthesis and characterization of Fe3O4 nanoparticles using Chlorella-K01 extract for potential enhancement of plant growth stimulating and antifungal activity DOI: 10.1038/s41598-021-01538-2
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