What absorbs at 1061 cm⁻¹ in an FTIR spectrum?
A band near 1061 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 1061 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 |
|---|---|---|---|
| C-O single bond | 13 | 13 | 1.0 |
| Methoxy (OCH3) | 12 | 12 | 1.0 |
| Methacrylate | 12 | 12 | 1.0 |
| Acetate | 12 | 12 | 1.0 |
| Hydroxyl (O-H) | 5 | 5 | 1.0 |
| C c single bond | 4 | 4 | 1.0 |
| Phosphate (PO4) | 3 | 3 | 1.0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1.0 |
| Carbohydrate | 2 | 2 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Silicon (Si) | 2 | 2 | 1.0 |
| N h | 2 | 2 | 1.0 |
| Secondary amine | 2 | 2 | 1.0 |
| C n single bond | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Carboxyl (COOH) | 2 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Chlorine | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| N n bond | 1 | 1 | 1.0 |
| Fluorine (C-F) | 1 | 1 | 1.0 |
| Silicon silicon | 1 | 1 | 1.0 |
| Borate | 1 | 1 | 1.0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 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 |
|---|---|---|---|
| chitosan | 1061, 1650, 1655 | Acetate, Methacrylate, C-O single bond | 1 |
| Cellulose | 1061, 1735, 1650 | Acetate, Methacrylate, C-O single bond | 1 |
| CMC | 1061, 1423, 1196 | 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 1061 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
-
confidence 1.0
“While the absorption bands at wave numbers 1060.88 and 1213.27 cm-1 show the Si-O-Si asymmetrical vibrations.”
Synthesis and catalytic activity of mesoporous Al-MCM-41/UiO-66 for esterification of oleic acid DOI: 10.1063/1.5082500 -
Alkyl C-H confidence 1.0
“The bands around cm-1 1423 and 1325 are assigned to -CH scissoring and hydroxyl group (-OH) bending vibration, 2 1061cm-1 respectively.”
Eliza 等 - 2015 - Carboxymethyl Cellulose (CMC) from Oil Palm Empty DOI: 10.1088/1742-6596/622/1/012026 -
Carboxyl (COOH) confidence 1.0
“LLM confirmed rule peak-group candidate”
Effective dispersion of oxidized multi-walled carbon nanotubes using a water-soluble N,O-carboxymethyl chitosan via non-covalent interaction DOI: 10.1039/d2ra03592h -
Acetate confidence 1.0
“sucrose was observed between 1057 and 1061 indicating strong stretch of C-O of alcohols, carboxylic”
Rapid estimation and quantification of sucrose content in fruit juices using Fourier transform infrared–attenuated total reflectance (FTIR–ATR) spectroscopy DOI: 10.1007/s11694-015-9272-1 -
Amide confidence 1.0
“1.56G0.07 bend (1450) (1453) (1449) (1452) CH 2 0.83G0.04 0.04G0.01 0.29G0.05 0.08G0.02 C-N/C-C stretch (1061) (1056) (1046) (1051)”
Ngarize 等 - 2005 - A comparative study of heat and high pressure indu DOI: 10.1016/j.foodhyd.2004.12.008 -
Borate confidence 1.0
“The bandobserved within 879 to 899 cm-1 B-O are allocated to bond stretching mode of BO to 1061.05 tions.”
Obayes 等 - 2015 - Strontium ion concentration effects on structural DOI: 10.1016/j.jnoncrysol.2015.07.026 -
confidence 1.0
“The peak at 1061 peaks of cadmium (Cd), zinc (Zn), magnesium (Mg) and uted due to stretching of Mg-OH.”
Microwave assisted CdO–ZnO–MgO nanocomposite and its photocatalytic and antibacterial studies DOI: 10.1007/s10854-018-9968-1 -
Silicon silicon confidence 1.0
“The bands at 451.900 791.803 and 1060.76 Si~O~Si Si~O~Si 1060.76 cm-1 are attributed to the bending vibration, the stretch Si∼O∼Si Si∼O∼Si are attributed to the bending vibration, the stretch vibration and the Si~O~Si vibration and the stre”
Green Synthesis of Crystalline Silica from Sugarcane Bagasse Ash: Physico-Chemical Properties DOI: 10.3390/nano12132184
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.