What absorbs at 1447 cm⁻¹ in an FTIR spectrum?
A band near 1447 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 4 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Alkyl C-H | 3 | 2 | 1.0 |
| Carbonate | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 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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Carbonyl (C=O) confidence 1.0
“FTIR spectra for chitosan gave a characteristic - Pre-proof cm-1 cm-1 NH2 band of 3447 and a carbonyl group band of 1447 from mussel shell [10].”
Sudatta 等 - 2020 - Extraction, characterization and antimicrobial act DOI: 10.1016/j.ijbiomac.2020.06.291 -
Alkyl C-H confidence 1.0
“Figure 2 shows that the FTIR spectrum of the Si-NP modified by TSM using used cm-1 solvent had a strong absorption peak at wave number 2927.94 and 1446.61 cm-1 associated with -CH group vibration and deforming vibration of the -C-H”
Wahyuningsih 等 - 2021 - Characteristics of Silica Nanoparticles from Rice DOI: 10.5614/j.eng.technol.sci.2021.53.4.3 -
Alkene (C=C) confidence 1.0
“Additionally, RS spectra revealed a decrease in the lipid cm-1 unsaturation level expressed by the ratio of the 1661 band, corresponding to the cm-1 C=C stretching vibrations, to the 1447 band attributed to the scissoring mode of the”
Spectroscopic Signature of Red Blood Cells in a D-Galactose-Induced Accelerated Aging Model DOI: 10.3390/ijms22052660 -
Carbonate confidence 1.0
“XRD Study The characteristic carbonate peaks at 1447 (asymmetric stretching) and 1400 (symmetThe XRD pattern of MKS (alkali-activated metakaolin with silica sand filler) was like”
Blending Plastics Waste with Highly Available Jordanian Kaolin for Preparation of Alkali-Activated Mortars DOI: 10.3390/su142315742
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