What absorbs at 867 cm⁻¹ in an FTIR spectrum?
A band near 867 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 867 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.
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Methoxy (OCH3) | 3 | 3 | 1.0 |
| Methacrylate | 3 | 3 | 1.0 |
| Acetate | 3 | 3 | 1.0 |
| C-O single bond | 2 | 2 | 1.0 |
| Alkyl C-H | 2 | 1 | 1.0 |
| Sulfate (SO4) | 1 | 1 | 1.0 |
| Sulfonate | 1 | 1 | 1.0 |
| C-S single bond | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Carbonate | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Imide | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Amide | 1 | 0 | 1.0 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
Possible materials
| 材料 | 支持峰 | Overlapping groups | 引用来源 |
|---|---|---|---|
| nanotubes | 867, 1735, 1630 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
| hydroxyapatite | 867, 1620, 1639 | 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 867 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.
这些分配背后的文献
-
Ring structure 置信度 1.0
“cm-1 cm-1 R D-ribose increasing time of the accumulation, the values gradually ing, 1049 to C - O stretching, 913 to ct cm-1 D-ribose increase, which can be observed by increasing the diameter ring vibration, and 867 to C endo-sugar.”
Gallic acid-coated silver nanoparticles as perspective drug nanocarriers: bioanalytical study DOI: 10.1007/s00216-022-03955-2 -
Acetate 置信度 1.0
“1126 1126 Stretching of C-O bond - - 867 867”
Tuning of ferrites (CoxFe3-xO4) nanoparticles by co-precipitation technique DOI: 10.1007/s42452-019-0244-7 -
Acetate 置信度 1.0
“A cm-1 peak at 867 cm-1 was assigned to CH3 group vibration.”
Basheer 等 - 2020 - Synthesis, Characterization, and Analysis of Hybri DOI: 10.3390/polym12061305 -
置信度 1.0
“5c) shows two peaks at 867.3 eV and microscope and energy dispersive X-ray spectrometer (SEM850 eV corresponding to Ni 2p and Ni 2p respectively.”
Flower-like 3-dimensional hierarchical Co3O4/NiO microspheres for 4-nitrophenol reduction reaction DOI: 10.1039/c8na00029h -
Imide 置信度 1.0
“Band of unsaturation of maleimide disappeared”
Eugenol-based thermally stable thermosets by Alder-ene reaction: From synthesis to thermal degradation DOI: 10.1002/app.39269. -
Metal oxygen 置信度 1.0
“The spectrum of AM-6 shows a Raman band at 867 cm-1, V-O the basis of the above discussions, a possible model is proposed which is the characteristic for the stretching V-O-V wires.24,37”
Guo 等 - 2012 - Structure and Basicity of Microporous Titanosilica DOI: 10.1021/jp305543m -
Carbonate 置信度 1.0
“LLM confirmed rule peak-group candidate”
Microstructure and Characteristics of Calcium Phosphate Layers on Bioactive Oxide Surfaces of Air-Sintered Titanium Foams after Immersion in Simulated Body Fluid DOI: 10.3390/ma9120956 -
C-S single bond 置信度 1.0
“5) exhibits a very strong cm-1, thiourethane bonds and the second stage-the urethane double absorption band at 2,071 and 2,047 characbonds (weakly visible peak at 332-338 (cid:3)C or as shoulder at teristic of asymmetric and symmetric C=O s”
Rogulska 等 - 2013 - New thermoplastic poly(thiourethane-urethane) elas DOI: 10.1007/s10973-013-3007-5
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