What absorbs at 1497 cm⁻¹ in an FTIR spectrum?
A band near 1497 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 1497 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 |
|---|---|---|---|
| Aromatic ring | 7 | 5 | 1.0 |
| C c single bond | 4 | 3 | 1.0 |
| Alkyl C-H | 3 | 3 | 1.0 |
| Alkene (C=C) | 3 | 3 | 1.0 |
| N h | 3 | 3 | 1.0 |
| C=n | 3 | 3 | 1.0 |
| Ring structure | 3 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Amino acid | 1 | 1 | 1.0 |
| N n bond | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 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
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 1497 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
-
C=n 置信度 1.0
“The peaks observed at 1497, 1466 and cm-1 205 1400 are attributed to C=N stretching in aromatic compounds.”
Effect of polyaniline (PANI) on Poly(vinylidene fluoride-co-hexaflouro propylene) (PVDF-co-HFP) polymer electrolyte membrane prepared by breath figure method DOI: 10.1016/j.polymertesting.2017.03.012 -
置信度 1.0
“The strong transmission bands at 1497 cm-1 are attributed to the vibration of stretchstretching and deformation of the Ti-O-Ti bond lift-up (stemming) from the Cu substrate ing and deformation of the Ti-O-Ti bond lift-up (stemming) from the”
Effect of Microstructural and Tribological Behaviors of Sputtered Titanium Carbide Thin Film on Copper Substrate DOI: 10.3390/ma16010174 -
Amide 置信度 1.0
“peak values at 1496.93 The stretching vibration of C-N group of RR2 appears at 1217 cm-1 N The peaks at 1186.54, 1129.39, 1048.24 and 668.21 showed S=O stretching vibrations.”
Sakthisharmila 等 - 2017 - A characteristic study on generation and interacti DOI: 10.1016/j.molliq.2017.01.106 -
Alkene (C=C) 置信度 1.0
“1479 1476 C=C stretching 1497 1497 C=N stretching”
Photodegradation of Azathioprine in the Presence of Sodium Thiosulfate DOI: 10.3390/ijms23073975 -
C c single bond 置信度 1.0
“The bands at 1497 and 1455 can be readily assigned to cm-1 to the C-C stretching skeletal vibrations of the aromatic ring and the band centred at 1208 cm-1 vibration.”
Augugliaro 等 - 2008 - Photocatalytic oxidation of aromatic alcohols to a DOI: 10.1016/j.apcata.2008.07.038 -
Alkyl C-H 置信度 1.0
“The red-shifted band is observed at 1497 aH bending and asymmetric counterparts of the ring CC/ HC CH stretching mode are not evident but are predicted to be low intensity modes.”
Hydrogen Bonding in Human Manganese Superoxide Dismutase Containing 3-Fluorotyrosine DOI: 10.1529/biophysj.105.060616 -
Aromatic ring 置信度 1.0
“These Raman lines are atFigure 5a-c have maxima at ~415-498 cm-1, 621-825 cm-1, 906-1003 cm-1, 1184 cm-1, 1331 C=N stretching, C=C stretching in the quinoid ring and C-C stretching in the benzene ring, tributed to the vibrational modes caus”
The Photoluminescence and Vibrational Properties of Black Phosphorous Sheets Chemically/Electrochemically Functionalized in the Presence of Diphenylamine DOI: 10.3390/polym14214479 -
Amide 置信度 1.0
“40 41 cm-1 In the amide II region (W4) a peak at 1497 was found in 100% of exudate and serum 42 43”
Cerusico 等 - 2018 - FTIR spectroscopy of chronic venous leg ulcer exud DOI: 10.1039/C7AN01909B.
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