What absorbs at 1096 cm⁻¹ in an FTIR spectrum?
A band near 1096 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 1096 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 | 14 | 12 | 1.0 |
| C-O single bond | 14 | 12 | 1.0 |
| Acetate | 14 | 12 | 1.0 |
| Methoxy (OCH3) | 13 | 11 | 1.0 |
| Silicon-oxygen (Si-O) | 7 | 6 | 1.0 |
| Siloxane (Si-O-Si) | 5 | 5 | 1.0 |
| Alkyl C-H | 5 | 5 | 1.0 |
| Hydroxyl (O-H) | 5 | 4 | 1.0 |
| C c single bond | 4 | 4 | 1.0 |
| Carbohydrate | 4 | 4 | 1.0 |
| Silicon (Si) | 3 | 3 | 1.0 |
| Amide | 3 | 3 | 1.0 |
| Phosphate (PO4) | 3 | 3 | 1.0 |
| Secondary amine | 2 | 2 | 1.0 |
| C n single bond | 2 | 2 | 1.0 |
| Carboxyl (COOH) | 2 | 2 | 1.0 |
| N h | 2 | 2 | 1.0 |
| Aromatic ring | 2 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Nucleic acid | 1 | 1 | 1.0 |
| Lipid | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Fluorine (C-F) | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Phosphorus | 1 | 1 | 1.0 |
| N-O bond | 1 | 1 | 1.0 |
| Alkene (C=C) | 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 |
|---|---|---|---|
| AgNPs | 1096, 1232, 1048 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
| cellulose | 1096, 1735, 1650 | Acetate, Methacrylate, C-O single bond | 1 |
| silica | 1096, 1100, 1080 | 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 1096 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
“The peak shown cm1 at 1096 was tells about the formation of Si-O-Si asymmetric stretching vibration in the ngerprint region [22].”
Banoth 等 - 2022 - Sustainable Thermochemical Extraction of Amorphous DOI: 10.21203/rs.3.rs-657645/v1 -
N-O bond confidence 1.0
“The weak peak was observed at around 1096 due to N-O CEPTE”
Fabrication of the flexible nanogenerator from BTO nanopowders on graphene coated PMMA substrates by sol-gel method DOI: 10.1016/j.matchemphys.2017.02.002 -
Amide confidence 1.0
“The peak at 1095.6 was assigned to C-N stretching vibration of aliphatic amines, alcohol or phenols characterizing the presence of polyphenols.”
Kumar 等 - 2017 - Photo-induced and phytomediated synthesis of silve DOI: 10.1016/j.jphotobiol.2017.04.022 -
confidence 1.0
“There is a peak at which attributed to the platelet shaped 1078cm-1 1096cm-1 oxygen precipitates, but it is weaker than peak and peak.”
Ma 等 - 2005 - Infrared studies of the oxygen precipitation in fa DOI: 10.1016/j.mseb.2005.06.005 -
Carbohydrate confidence 1.0
“region of torsional vibrations of saccharides, as well as extensive area on the paper surface and a radial growth cm-1 that correthe cellulose peaks at 1096 and 1121”
Povolotckaia 等 - 2019 - Biodamage to Paper by Micromycetes under Experimen DOI: 10.1134/S0030400X19040209 -
Carboxyl (COOH) confidence 1.0
“Images of both factor correlation n 4 u 1127cm-1/1096cm-1 1112cm-1/1096cm-1 coefficients and the peak height ratios and s c demonstrated higher acid phosphate content in younger vs.”
Spevak 等 - 2013 - Fourier Transform Infrared Spectroscopic Imaging P DOI: 10.1007/s00223-013-9695-9. -
Acetate confidence 1.0
“a C-O stretching vibration at 1096 and a C=O vibration at 1744”
The effect of Ag nanoparticles in Ag/polyvinyl alcohol nanofiber composites DOI: 10.1007/s00289-020-03528-2 -
Silicon (Si) confidence 1.0
“The peaks at 1139.24 cm-1 and 1095.99 cm-1 are assigned to stretching vibration of Si-O, the peaks at 1031.25 cm-1 and 1008.16 cm-1 are assigned to stretching vibration of Si(Al)-O, the peaks at 787.56 cm-1 and 761.71 cm-1 are assigned to s”
Effects and Mechanism of Fe3+ on Flotation Separation of Feldspar and Epidote with Sodium Oleate at Natural pH DOI: 10.3390/separations9050110
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.