What absorbs at 3712 cm⁻¹ in an FTIR spectrum?
A band near 3712 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 |
|---|---|---|---|
| C-O single bond | 1 | 1 | 1.0 |
| Nitro (NO2) | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 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
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confidence 1.0
“The cinnamon oil showed peaks at 3712, 2904, 1639, 1487, 1201, and 1072 were due to the amine and phenols, alkanes, ketone, ester and alkenes, nitro group, ether cm-1, and esters [32] respectively.”
Ashfaq 等 - 2022 - Enhancement of the Solubility and Bioavailability DOI: 10.3390/pharmaceutics14030482
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