What absorbs at 3038 cm⁻¹ in an FTIR spectrum?
A band near 3038 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 |
|---|---|---|---|
| Aromatic ring | 2 | 2 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Alkene (C=C) | 2 | 2 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Alkyl C-H confidence 1.0
“LLM confirmed rule peak-group candidate”
Maity 等 - 2014 - Effect of Surface Fluorination of Poly (p-Phenylen DOI: 10.14429/dsj.64.7321 -
Alkene (C=C) confidence 1.0
“1,9-Bis[4-(pyreneiminomethylidene)-phenoxy]-nonane cm-1): ν, FTIR (KBr, 3038 (=C-H stretch of the aromatic rings), 2933-2851 (C-H stretch of aliphatic chains), 1627 (-N=CHstretch), 1601, 1587, 1511 (C-C ring stretch), 1243,”
Mesomorphic Behavior of Symmetric Azomethine Dimers Containing Different Chromophore Groups DOI: 10.3390/molecules26082183 -
Alkene (C=C) confidence 0.9
“Explicit assignment in text: '=CH 3038'”
Jeon 和 Ha - 2012 - Spectroscopic Analysis on the Michael Addition Rea DOI: 10.7317/pk.2012.36.5.668
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