What absorbs at 432 cm⁻¹ in an FTIR spectrum?
A band near 432 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 432 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.
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Metal oxygen | 9 | 6 | 1,0 |
| Alkyl C-H | 2 | 2 | 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 |
| Phosphorus | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| S s | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 0 | 1,0 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Possible materials
| Matériel | Pics de support | Overlapping groups | Sources citées |
|---|---|---|---|
| NiO | 432, 1006, 1450 | Metal oxygen, Alkyl C-H, Methoxy (OCH3) | 2 |
| ZnO | 432, 1400, 3430 | Metal oxygen, Alkyl C-H, Methacrylate | 1 |
| MWCNT | 432, 2876, 1430 | Alkyl C-H, Methoxy (OCH3), Methacrylate | 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 432 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.
Bibliographie derrière ces attributions
-
Metal oxygen confiance 1,0
“Figure 3b shows the FTIR characteristic of the absorption band of BaFe 12O appearing at Figure 3b shows the FTIR characteristic of the absorption band of BaFe12O19 appearing at 542.71 19 cm-1 cm-1 542.71 and 432.48 [54,55], which correspond”
Effect of Ratio in Ammonium Nitrate on the Structural, Microstructural, Magnetic, and AC Conductivity Properties of BaFe12O19 DOI: 10.3390/ma11112190 -
Metal oxygen confiance 1,0
“The peak at 432 cm-1 of the Raman spectra is the E2 phonon mode of the metal oxide NPs involved.”
Effects of Nd doping on structural, optical, morphological and surface-chemical state analysis of ZnO nanoparticles for antimicrobial and anticancer activities DOI: 10.1016/j.surfin.2021.101000 -
confiance 1,0
“While the characteristic peaks at 432 cm-1 Nc NC, which showed high concentration of Ni, O, Si, C, and 504 correspond to the vibration of Ni-O bond”
Efficient photodegradation of orange II dye by nickel oxide nanoparticles and nanoclay supported nickel oxide nanocomposite DOI: 10.1007/s13201-022-01647-x -
Metal oxygen confiance 1,0
“The EIS The presence of metal-oxygen bond was confirmed by of the all the samples resulted with a distorted semicircle FTIR data from the broad band found at 432.07cm-1.”
Facile preparation and characterization of novel manganese doped nickel oxide based nanostructured e DOI: 10.1080/21870764.2020.1793477 -
S s confiance 1,0
“(10 mg/mL), 16.333 2.028 (1 mg/mL), 10.000 2.000 ± ± Moreover, the FTIR spectra presented peaks at 432.19 (S-S (0.1 mg/mL), 32.333 0.882 (10 mg/mL), 21.000 1.732 ± ± stretch),576.19(C-Sstretch),707.35(C-Sstretch),1080.53(S-H (1 mg/mL), 13.0”
Ao 等 - 2022 - Green synthesis of biogenetic Te(0) nanoparticles DOI: 10.3389/fmicb.2022.1020179 -
Phosphate (PO4) confiance 1,0
“Therefore, in the obtained Raman spectra the presence of the phosphate group is highlighted by the vibrational bands at around 445 and 432 cm-1 that could be attributed”
Development of Silver Doped Hydroxyapatite Thin Films for Biomedical Applications DOI: 10.3390/coatings12030341 -
Alkyl C-H confiance 1,0
“Both peaks at cm-1 432 2994 and 2943 are attributed to the aliphatic asymmetric stretching vibration of the -CH”
Influence of montmorillonite/carbon nanotube hybrid nanofillers on the properties of poly(lactic acid) DOI: 10.1016/j.clay.2020.105925 -
Acetate confiance 1,0
“Castor oil showed a wide 430 band at 3450 cm-1 for hydroxyl groups, 2920 and 2850 cm-1 for CH2 and CH3 scissoring, 1743 cm-1 for 431 C-O ester groups, 1711 cm-1 for the stretching of C-O in free fatty acids, 1281 cm-1 for asymmetric C-O 432”
Vazquez-Gonzalez 等 - 2021 - Electrosprayed cashew gum microparticles for the e DOI: 10.1016/j.carbpol.2016.08.031
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