What absorbs at 1463 cm⁻¹ in an FTIR spectrum?
A band near 1463 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 8 cited sources
Quick answer
A band near 1463 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Alkyl C-H | 21 | 21 | 1.0 |
| Methacrylate | 9 | 9 | 1.0 |
| Acetate | 9 | 9 | 1.0 |
| Aromatic ring | 7 | 7 | 1.0 |
| Methoxy (OCH3) | 7 | 7 | 1.0 |
| C-O single bond | 7 | 7 | 1.0 |
| Alkene (C=C) | 6 | 6 | 1.0 |
| Carboxyl (COOH) | 5 | 5 | 1.0 |
| Hydroxyl (O-H) | 5 | 5 | 1.0 |
| Amide | 4 | 4 | 1.0 |
| Methyl | 4 | 4 | 1.0 |
| Carbonyl (C=O) | 3 | 3 | 1.0 |
| Secondary amine | 2 | 2 | 1.0 |
| C n single bond | 2 | 2 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| Lipid | 2 | 2 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Carbonate | 1 | 1 | 0.95 |
| C c single bond | 1 | 1 | 0.9 |
| Lignin | 1 | 1 | 0.9 |
Ranking reflects accumulated literature evidence, not a single fixed rule. Always confirm against your sample context.
Possible materials
| Material | Supporting peaks | Overlapping groups | Cited sources |
|---|---|---|---|
| polyethylene | 1463, 1737, 1720 | Alkyl C-H, Methacrylate, Acetate | 1 |
| PLLA | 1463, 1182, 921 | Alkyl C-H, Methacrylate, Acetate | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1463 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literature behind these assignments
-
Hydroxyl (O-H) confidence 1.0
“Where, the broad peaks appeared around 34003800 cm-1 and 1463 cm-1 that are ascribed to O-H stretching vibration involved in hydrogen bonds at NAC spectra before dye adsorption disappeared after dye adsorption process, as indicated in Figur”
Elkady 等 - 2020 - New Activated Carbon from Mine Coal for Adsorption DOI: 10.3390/ma13112498 -
Hydroxyl (O-H) confidence 1.0
“The strong absorption phenolic substance that is similar to the pepper seed melanin cm-1 peaks at 1512 and 1463 can be attributed to vibrations of (Wang, 2014).”
Enzymatic Browning in Wheat Kernels Produces Symptom of Black Point Caused by Bipolaris sorokiniana DOI: 10.3389/fmicb.2020.526266 -
Carboxyl (COOH) confidence 1.0
“Furthermore, the bands at 1463 and 1376 cm-1 cm-1, carboxylic acids and esters was indicated by the peak at 1735 which corresponded were attributed to the -CH2 and -CH3 bonds, respectively.”
Effects of Wet and Dry Treatments on Surface Functional Groups and Mechanical Properties of Flax Fiber Composites DOI: 10.3390/coatings13061036 -
Alkene (C=C) confidence 1.0
“It was found that the nonsymmetry stretch vibration, 2848 methyC@C cm(cid:2)1 nonsaturated double bond absorb peak area lene symmetry stretch vibration, 1463 methydecreased along with the increasing of discharge lene nonsymmetry changing an”
Shi 等 - 2006 - The investigation of argon plasma surface modifica DOI: 10.1016/j.eurpolymj.2006.01.007 -
Hydroxyl (O-H) confidence 1.0
“A urated signal from 3000 to 2800 (OH)bandasafunctionoftimefora cm(cid:3)1 isapparentandassignedtoCH bending strikingbandat1463 sorption experiment at RH = 95% (b).”
Time series Fourier transform infrared spectroscopy for characterization of water vapor sorption in hydrophilic and hydrophobic polymeric films DOI: 10.1016/j.saa.2020.119371 -
Aromatic ring confidence 1.0
“1602 Aromatic skeletal stretching (lignin) 1511 1509 Aromatic skeletal stretching (lignin) 1463”
Rapid identification of Pterocarpus santalinus and Dalbergia louvelii by FTIR and 2D correlation IR spectroscopy DOI: 10.1016/j.molstruc.2014.01.085 -
Aromatic ring confidence 1.0
“the presence of peak intensities between 1463 and 1627 such as cm-1 cm-1, 1495.7 and 1574.5 are attributed to aromatic ring -C=C structural structuring cm-1;”
Alamier 等 - 2022 - Thermodynamic and Spectroscopic Studies of SDS in DOI: 10.3390/app122312020 -
Alkyl C-H confidence 1.0
“In comparicm-1 H-O-H deformation, and the peak at 1463.36 represents C-H stretching.”
Foliar Application of Nanoclay Promotes Potato (Solanum tuberosum L.) Growth and Induces Systemic Resistance against Potato Virus Y DOI: 10.3390/v14102151
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