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
Resposta rápida
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.
Possíveis atribuições de grupos funcionais
| Grupo funcional | Fatos de suporte | Fontes citadas | Maior confiança |
|---|---|---|---|
| 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 |
A classificação reflete a evidência acumulada da literatura, não uma única regra autoritária. Sempre confirme com o contexto da sua amostra.
Materiais possíveis
| Material | Picos de suporte | Grupos sobrepostos | Fontes citadas |
|---|---|---|---|
| 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 |
Os materiais são mostrados apenas quando o mesmo conjunto de literatura suporta esta banda e pelo menos um pico característico adicional.
Lógica do espectro
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.
Uso no mundo real
Este tipo de consulta é comum em identificação de polímeros, triagem de plásticos desconhecidos, solução de problemas de CQ, verificação de materiais reciclados e revisão de atribuição de picos apoiada pela literatura.
Erros comuns
- Tratar uma banda isolada como prova de um material sem verificar pelo menos um ou dois picos de suporte.
- Ignorando sobreposição: vários grupos funcionais podem contribuir próximo ao mesmo número de onda.
- Ignorar a validação quando aditivos, misturas, oxidação ou contaminação podem distorcer o espectro.
Conselho de verificação
Quando a ambiguidade persistir, valide a hipótese com DSC, GC-MS ou TGA, especialmente para misturas, amostras degradadas e polímeros carregados.
Literatura por trás destas atribuições
-
confiança 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 confiança 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 confiança 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 confiança 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 -
confiança 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) confiança 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 -
confiança 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) confiança 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
Tem um espectro com esta banda?
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