What absorbs at 2352 cm⁻¹ in an FTIR spectrum?
A band near 2352 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 5 cited sources
Quick answer
A band near 2352 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.
Iespējamie funkcionālo grupu piešķīrumi
| Funkcionālā grupa | Atbalstošie fakti | Citētie avoti | Augstākā pārliecība |
|---|---|---|---|
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
| Carbon dioxide | 1 | 1 | 0,9 |
Rangs atspoguļo uzkrātos literatūras pierādījumus, nevis vienu autoritatīvu noteikumu. Vienmēr apstipriniet atbilstoši parauga kontekstam.
Possible materials
| Materiāls | Atbalstošie pīķi | Overlapping groups | Citētie avoti |
|---|---|---|---|
| ZnO NPs | 2352, 1664, 875 | 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 2352 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.
Literatūra aiz šiem piešķīrumiem
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pārliecība 1,0
“cm-1 band absorptions at 734 and 2352 The band absorption at 2352 indicates the absorption cm-1 of Ti-O, while the absorption at 734 is attributed to absorption of Ti-O-Ti.”
Nizar 等 - 2018 - The Effect of Titanium Tetrahedral Coordination of DOI: 10.1088/1757-899X/335/1/012036 -
Protein pārliecība 1,0
“cm-1 stretch of the methylene groups of the protein Bands at 2352 and 2109 are associated with the compounds44.”
Statistical optimization of experimental parameters for extracellular synthesis of zinc oxide nanoparticles by a novel haloalaliphilic Alkalibacillus sp.W7 DOI: 10.1038/s41598-021-90408-y -
Acetate pārliecība 1,0
“The absorption bands at 2352 represent the vibrations of the C-O bond, attributed to the presence of carbonates, that represent the vibrations of the C-O bond, attributed to the presence of carbonates, cm-1 homogeneously dissolved at the mo”
Hsieh 等 - 2021 - Using Geopolymer Technology on Synthesizing Leucit DOI: 10.3390/polym13213621 -
Carbon dioxide pārliecība 0,9
“Stretching vibration of O=C=O resulted in IR band at 2352 cm-1.”
Fabrication of Cu1.5Mn1.5O4 Nanoparticles Using One Step Self-Assembling Route to Enhance Energy Consumption DOI: 10.3390/app11052034 -
pārliecība 0,8
“Band at 2352 cm-1 assigned to adsorbed CO2.”
Rasko 和 Kiss - 2006 - CO oxidation in the presence of hydrogen on AuTiO DOI: 10.1007/s10562-006-0133-8
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