What absorbs at 1351 cm⁻¹ in an FTIR spectrum?
A band near 1351 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 1351 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 |
|---|---|---|---|
| N-O bond | 3 | 3 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 0.9 |
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 |
|---|---|---|---|
| GO | 1351, 1720, 1182 | C-O single bond, Alkyl C-H, Carboxyl (COOH) | 1 |
| biodiesel | 1351, 858, 3470 | Alkyl C-H, 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 1351 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
-
N-O bond 置信度 1.0
“LLM confirmed rule peak-group candidate”
Primera-Pedrozo 等 - 2007 - Detection of 2,4,6-trinitrotoluene on non traditio DOI: 10.1117/12.720405 -
Carboxyl (COOH) 置信度 1.0
“In addition, the current deintensity remains similar compared with the much higher incay during the 10 min steps was more pronounced for this tensity of the superimposed formate band at 1351 cm-1.”
Cychy 等 - 2021 - Optimizing the nickel boride layer thickness in a DOI: 10.1016/S1872-2067(20)63766-4 -
N-O bond 置信度 1.0
“cm´1 cm´1 The bands located at 1351 and 858.17 are associated with the N-O stretching vibration and The bands located at 1351 cm-1 and 858.17 cm-1 are associated with the N-O stretching vibration and”
Biodiesel Production by Aspergillus niger Lipase Immobilized on Barium Ferrite Magnetic Nanoparticles DOI: 10.3390/bioengineering3020014 -
Alkyl C-H 置信度 1.0
“The peak at 1351 is related to CH wagging of 2 cm1 The FTIR analysis of chalcone (ch), benzoxazine monooxazine.”
The effect of preparation conditions of chalcone based benzoxazine/magnetite nanocomposites on magnetization properties DOI: 10.1007/s10965-023-03515-x -
N-O bond 置信度 1.0
“cm-1 in LDH, corresponding to both the C-O and N-O The vibration at 1351 cm-1 cm-1 strentching modes, shifts to 1361 in LDH-2 and 1370 in LDH-3.”
Zhu 等 - 2008 - In situ synthesis of surfactantsilane-modified hy DOI: 10.1016/j.jcis.2007.11.037 -
C-O single bond 置信度 0.9
“Text: 'at 1351 and 1232 refer to deformation -C-OH vibrations'”
Aisha 等 - 2013 - Syzygium campanulatum korth methanolic extract inh DOI: 10.1186/1472-6882-13-168 -
置信度 0.9
“Text: '1351.27 (S+O)'”
High Potential Decolourisation of Textile Dyes from Wastewater by Manganese Peroxidase Production of Newly Immobilised Trametes hirsuta PW17-41 and FTIR Analysis DOI: 10.3390/microorganisms10050992 -
置信度 0.8
“New peak for PDA-RGO, due to C-N stretching.”
Determination of nicotine in tobacco products based on mussel-inspired reduced graphene oxide-supported gold nanoparticles DOI: 10.1038/srep29230
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