What absorbs at 1010 cm⁻¹ in an FTIR spectrum?
A band near 1010 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 1010 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 |
|---|---|---|---|
| Methacrylate | 13 | 12 | 1.0 |
| Acetate | 13 | 12 | 1.0 |
| Methoxy (OCH3) | 12 | 11 | 1.0 |
| C-O single bond | 12 | 11 | 1.0 |
| Silicon-oxygen (Si-O) | 9 | 7 | 1.0 |
| Siloxane (Si-O-Si) | 5 | 4 | 1.0 |
| Carbonyl (C=O) | 4 | 4 | 1.0 |
| Amide | 4 | 4 | 1.0 |
| Hydroxyl (O-H) | 4 | 4 | 1.0 |
| Alkyl C-H | 4 | 3 | 1.0 |
| Silicon (Si) | 4 | 2 | 1.0 |
| Carbohydrate | 3 | 3 | 1.0 |
| Phosphate (PO4) | 3 | 3 | 1.0 |
| Ring structure | 3 | 3 | 1.0 |
| Silanol (Si-OH) | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Phosphorus | 2 | 2 | 1.0 |
| Nucleic acid | 2 | 2 | 1.0 |
| Metal oxygen | 2 | 2 | 1.0 |
| Methyl | 2 | 1 | 1.0 |
| Carbon dioxide | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| S eq o | 1 | 1 | 1.0 |
| Oxygen heterocycle | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Sulfur | 1 | 1 | 1.0 |
| Imide | 1 | 1 | 0.6 |
| Metal oxo | 1 | 0 | 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 |
|---|---|---|---|
| nanotubes | 1010, 1735, 1630 | Methacrylate, Acetate, Methoxy (OCH3) | 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 1010 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
-
Metal oxygen confidence 1.0
“The main absorption FTIR bands of H 3PW 12O are situated at 800, 893, 984 d 40 1010 cm-1 W-O c-W and 1080 and are associated with the stretching mode W-O e-W (where corner oxygen atoms are abbreviated as O c), the”
Single-walled carbon nanotubes functionalized with polydiphenylamine as active materials for applications in the supercapacitors field DOI: 10.1016/j.diamond.2012.12.006 -
Acetate confidence 1.0
“cm-1 indicated by the band at 1147 The peak at 1010 denotes the solitary C-O bond as well as the CH bending”
Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater DOI: 10.1007/s13201-023-01880-y -
Alkyl C-H confidence 1.0
“The major identification as a fluorenone-type structure especially after considering C-H bands of this region are the in-plane deformation band at 1010”
Detecting, characterising and assessing PEEK’s and CF-PEEK’s thermal degradation in rapid high-temperature processing DOI: 10.1016/j.polymdegradstab.2022.110096 -
Phosphate (PO4) confidence 1.0
“The absorbance and positions of the main peaks, the 2nd derivative components of the phosphate and carbonate bands, as well as the cm-1 full width at half maximum (FWHM) of the 1010 phosphate peak are particle size dependent.”
Kontopoulos 等 - 2018 - Preparation of bone powder for FTIR-ATR analysis DOI: 10.1016/j.vibspec.2018.09.004 -
confidence 1.0
“cm-1 ∼3000-3675 mode.42 as well as absorbance gains at 880, 920, and 930 The The absorbance features at are cm-1 absorbance losses at 975 and 1010 consistent with the stretching vibrations of isolated and are assigned to the Al-(HF)* Si-OH”
Lee 等 - 2015 - Atomic Layer Deposition of AlF3 Using Trimethylalu DOI: 10.1021/acs.jpcc.5b02625 -
Sulfur confidence 1.0
“The peak at 1010 cm is comsigned to carbon-sulfur stretching bond and carbon-carbon twist.”
A case study of poly (aryl ether sulfone) hemodialysis membrane interactions with human blood: Molecular dynamics simulation and experimental analyses DOI: 10.1016/j.cmpb.2020.105742 -
Carboxyl (COOH) confidence 1.0
“1638.25cm-1 <1700cm-1 -COOH(C=OStretching) (Medium) cm-1 cm-1 <1700 (Medium) -COOH (C=O Stretching) 1638.25 1010.16cm-1 and922.53cm-1 ±1050cm-1 -COOH(C-OStretching)”
Validation of the Developed Zero-Order Infrared Spectrophotometry Method for Qualitative and Quantitative Analyses of Tranexamic Acid in Marketed Tablets DOI: 10.3390/molecules26226985 -
Hydroxyl (O-H) confidence 1.0
“PolymerDegradationandStability211(2023)110311 • phenolic peak related to Irganox 1010 was superimposed and shadowed According to the number of functional phenolic groups in the noncm-1.”
Temperature dependent degradation of phenolic stabilizers and ageing behaviour of PP-R micro-specimen DOI: 10.1016/j.polymdegradstab.2023.110311
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