What absorbs at 1506 cm⁻¹ in an FTIR spectrum?
A band near 1506 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 7 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Aromatic ring | 3 | 3 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Carbonate | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Lignin | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Aromatic ring confidence 1.0
“LLM confirmed rule peak-group candidate”
Mechanism and Kinetics of Curing of Diglycidyl Ether of Bisphenol A (DGEBA) Resin by Chitosan DOI: 10.1002/pen.24463 -
C c single bond confidence 1.0
“~1725 Aromatic Ring C=C Stretching ~1605 Aromatic Ring C-C Stretching ~1506 Stretching of Symmetrical aromatic C-O-C”
Degradation Performance Investigation of Hydrothermally Stressed Epoxy Micro and Nanocomposites for High Voltage Insulation DOI: 10.3390/polym14061094 -
Lignin confidence 1.0
“The lignin peak at 1506 594 E.D.”
Tomak - 2014 - Changes in chemical composition of decayed Scots p DOI: 10.1515/secm-2013-0180 -
Aromatic ring confidence 1.0
“bamboo scrimber samples placed in the north and south region 1506cm-1 was arising from aromatic Since the absorption peak at for six years weathering period, respectively.”
Study of the long-term degradation behavior of bamboo scrimber under natural weathering DOI: 10.1038/s41529-022-00273-x -
C c single bond confidence 1.0
“The absorption wavenumber of 1601 and 1480 the excellent homogeneity and low roughness PEI[ethacm-1 is due to the C-C stretch in the aroband at 1506 nol]/CNER[chloroform] (Figure 1(e)) was selected for ring.20 The CH 2-O-CH bending mode of”
Development of layer‐by‐layer assembled thin coatings on aluminium alloy AA2024‐T3 for high resolution studies of local corrosion processes DOI: 10.1002/app.49826 -
Aromatic ring confidence 1.0
“However, there were substantial cm-1 increases in the intensities of the peaks at 1595 (C=C aromatic skeletal vibration), cm-1 cm-1 1506 (C=C aromatic skeletal stretching vibration), 1453 (C-H deformation), cm-1”
Altuntas 等 - 2017 - Biodegradation Properties of Wood-plastic Composit DOI: 10.1002/app.24358 -
Carbonate confidence 1.0
“Poorly crystalline powder displayed an A 2 cm-1) carbonate peak (at 1506 overlapping a cm-1), 32Fig 5.”
Brangule 等 - 2015 - Importance of FTIR Spectra Deconvolution for the A DOI: 10.1088/1757-899X/77/1/012027
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