What absorbs at 603 cm⁻¹ in an FTIR spectrum?
A band near 603 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 603 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.
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| Phosphate (PO4) | 7 | 5 | 1,0 |
| N h | 2 | 2 | 1,0 |
| Alkyl C-H | 2 | 2 | 1,0 |
| Aromatic ring | 2 | 2 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Metal carbon | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| S s | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
Possible materials
| Materiale | Understøttende toppe | Overlapping groups | Citerede kilder |
|---|---|---|---|
| Silica | 603, 1100, 1080 | Alkyl C-H | 1 |
| polypyrrole | 603, 1700, 400 | Alkyl C-H, N h | 1 |
| PVA | 603, 1660, 2930 | Alkyl C-H | 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 603 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.
Litteratur bag disse tildelinger
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tillid 1,0
“and the peak at 603 is due to the cm-1 N-H wagging;”
Thakur 和 Lokhande - 2018 - Morphological Modification for Optimum Electrochem DOI: 10.4152/pea.201806377 -
Aromatic ring tillid 1,0
“Desorption and regeneration cm(cid:0) 1 peaks are one at 603 is because of benzene ring deformation in cm(cid:0) 1 polyaniline other at 518 is due to cross-linking between polyaniAfter adsorption of Cr(VI), the desorption experiment was per”
Efficient removal of Cr(VI) by polyaniline modified biochar from date (Phoenix dactylifera) seed DOI: 10.1016/j.gsd.2021.100653 -
Aromatic ring tillid 1,0
“The band at 960 cm-1 is associated with the out-of-plane deformation like band" is related to the vibration mode of N=Q=N (Q represents the quinoid ring), of C-H in the 1,4-disubstituted benzene ring, and 603 cm-1 and 695 cm-1 correspond to”
Preparation of Anionic Surfactant-Based One-Dimensional Nanostructured Polyaniline Fibers for HydrogenStorage Applications DOI: 10.3390/polym15071658 -
S s tillid 1,0
“The band assigned to -C-San d the bands s at 524 and d 465 at 603 cm-1 his means assigned b both at S-S also decrea ase a lot.”
Colom 等 - 2016 - FTIR spectroscopic and thermogravimetric character DOI: 10.1016/j.polymertesting.2016.04.020 -
tillid 1,0
“Both cm-1 spectra are characterised by a broad band at 1140 corresponding to v S-O stretching and 3 cm-1 two narrow bands at 603 and 674 corresponding to v S-O bending.”
Deviese 等 - 2017 - A multi-analytical approach using FTIR, GCMS and DOI: 10.1016/j.microc.2017.03.012 -
Silicon (Si) tillid 1,0
“Other peaks, ascribed to vibrations from the structure of tobermorite, are at about 1052 cm-1 (νasSi-O-Si), 997 cm-1 (νSi-O-), 977 cm-1 (νSi-O-), and 935 cm-1 (νSi-O-), which are all attributed to asymmetric stretching vibracm-1 (νSi-O-), (”
Phase Composition of Silica Fume—Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA DOI: 10.3390/ma14112786 -
tillid 1,0
“Sr2+ Zn2+ bands at 603 and 565, which could be due to both and servedinFig.1butthiscouldbeduetotheshifttotheleftandlower2θ substituting for calcium in the nHA lattices.”
Synthesis and characterisation of nanophase hydroxyapatite co-substituted with strontium and zinc DOI: 10.1016/j.ceramint.2018.01.206 -
Phosphate (PO4) tillid 1,0
“565cm-1 260∘ ), and O-P-O bands (603, ) with C, whereas the PPVA The pure PVA film is stable up to 190∘”
Mohamed Saat 和 Johan - 2014 - The surface structure and thermal properties of no DOI: 10.1155/2014/439839
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