What absorbs at 1063 cm⁻¹ in an FTIR spectrum?
A band near 1063 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 1063 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 |
|---|---|---|---|
| Acetate | 12 | 12 | 1.0 |
| Methoxy (OCH3) | 11 | 11 | 1.0 |
| Methacrylate | 11 | 11 | 1.0 |
| C-O single bond | 11 | 11 | 1.0 |
| Alkyl C-H | 5 | 5 | 1.0 |
| Aromatic ring | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 3 | 3 | 1.0 |
| Siloxane (Si-O-Si) | 3 | 3 | 1.0 |
| Amide | 3 | 2 | 1.0 |
| Alkene (C=C) | 2 | 2 | 1.0 |
| Ring structure | 2 | 2 | 1.0 |
| Carbohydrate | 2 | 2 | 1.0 |
| Secondary amine | 2 | 2 | 1.0 |
| C n single bond | 2 | 2 | 1.0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1.0 |
| Silicon (Si) | 2 | 2 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Nucleic acid | 1 | 1 | 1.0 |
| Fluorine (C-F) | 1 | 1 | 1.0 |
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 |
|---|---|---|---|
| hemicellulose | 1063, 1730, 897 | Methacrylate, Acetate, C-O single bond | 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 1063 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
-
Carbohydrate confidence 1.0
“The positive influence of PC2 loadings had three peaks at 1676, 1630 cm-1 assigned to amide I (β-turns and β-sheets), and 1063 cm-1 (mostly might be related to cellulose and hemicellulose) which differentiated the control SR (outstanding) f”
Specific Mycoparasite-Fusarium Graminearum Molecular Signatures in Germinating Seeds Disabled Fusarium Head Blight Pathogen’s Infection DOI: 10.3390/ijms22052461 -
confidence 1.0
“Z.Mahmoodetal./SpectrochimicaActaPartA65(2006)445-452 451 558cm-1are 1063cm-1 to MCO bending vibration and band observed at and the C-F stretching bands are found at 1045 and”
Mahmood 等 - 2006 - Comparative vapour phase FTIR spectra and vibratio DOI: 10.1016/j.saa.2005.11.024 -
Amide confidence 1.0
“Meanwhile, the presence of peaks at 1355 cm-1 and 1063 cm-1 can be atgranule units and there is aggregation among the granules that make up a porous structure, tributed to C-N bending vibrations and S=O stretching vibrations of sulfonic aci”
Degradation of Diazo Congo Red Dye by Using Synthesized Poly-Ferric-Silicate-Sulphate through Co-Polymerization Process DOI: 10.3390/polym15010237 -
Acetate confidence 1.0
“This 1062.5137cm-1 which indicated a C-O-C ether peak appeared at explains the change in the structure of the polymer, due to the stretch.”
Zaman 等 - 2021 - Synthesis of Thiol-Modified Hemicellulose, Its Bio DOI: 10.3389/fphar.2021.550020 -
Hydroxyl (O-H) confidence 1.0
“The long, sharp peak at 3402 cm-1 indicates the presence of the hydroxyl groups (-OH), the peak at 2940 cm-1 indicates the characteristic alkyl groups (C-H) of alkanes, and the peaks at 1634 and 1063 cm-1 indicate the C=C and C-O-C bonds, r”
Application of Plant Surfactants as Cleaning Agents in Shampoo Formulations DOI: 10.3390/pr11030879 -
Alkyl C-H confidence 1.0
“14 14 stretch 24-C 2968/- -/- 2975/- C-H -/- stretch stretching vibration 1063/1060 1063/1060 O 25 of isolated anion”
Dhumal 等 - 2016 - Molecular Interactions of a Cu-Based Metal-Organic DOI: 10.1021/acs.jpcc.5b10123 -
Acetate confidence 1.0
“The vibrations of the C-O bonds are also identified at 1063cm-1 1065 [10].”
Dippong 等 - 2017 - INFLUENCE OF THE COBALT NITRATE ETHYLENE GLYCOL M DOI: 10.24193/subbchem.2017.3.13 -
confidence 1.0
“788.05 788.14 Symmetric and symmetric stretching mode at SiO-Si 1063.26 1063.45 Si-O-Si stretching modes”
Data extraction of nano silica as a potential filler in nanocomposites from rice husk ash with ballmill and coprecipitation methods DOI: 10.1016/j.dib.2022.108656
Have a spectrum with this band?
Upload your FTIR spectrum and get a full interpretation report — peak assignments with literature citations, library matches, and a literature-backed analysis — in seconds.