What absorbs at 447 cm⁻¹ in an FTIR spectrum?
A band near 447 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
Snel antwoord
A band near 447 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.
Mogelijke functionele-groeptoewijzingen
| Functionele groep | Ondersteunende feiten | Geciteerde bronnen | Hoogste vertrouwen |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 2 | 2 | 1,0 |
| Metal oxygen | 2 | 2 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
Ranglijst weerspiegelt cumulatief literatuurbewijs, niet één gezaghebbende regel. Bevestig altijd aan de hand van uw monsterecontext.
Spectrumlogica
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 447 cm⁻¹ is usually not enough for material identification by itself.
Gebruik in de praktijk
Dit type query komt vaak voor bij polymeeridentificatie, screening van onbekende kunststoffen, probleemoplossing bij QC, verificatie van gerecycled materiaal en literatuurondersteunde beoordeling van piektoewijzing.
Veelgemaakte fouten
- Het behandelen van een enkele geïsoleerde band als bewijs van een materiaal zonder ten minste een of twee ondersteunende pieken te controleren.
- Overlap negeren: meerdere functionele groepen kunnen bijdragen rond hetzelfde golfgetal.
- Validatie overslaan wanneer additieven, mengsels, oxidatie of verontreiniging het spectrum kunnen verstoren.
Advies voor verificatie
Wanneer dubbelzinnigheid blijft bestaan, valideer de hypothese met DSC, GC-MS of TGA, vooral voor mengsels, gedegradeerde monsters en gevulde polymeren.
Literatuur achter deze toewijzingen
-
Silicon-oxygen (Si-O) vertrouwen 1,0
“The band at 447.49 is O-Si-O bending [11, 15, 16], at 794.67 cm-1 cm-1 is Si-OH stretching [11], and at 1087.85 is Si-O-Si stretching asymmetric [6, 15].”
Deswardani 等 - 2017 - Study of Structural and Magnetic Properties of Sil DOI: 10.1088/1757-899X/202/1/012047 -
Metal oxygen vertrouwen 1,0
“LLM confirmed rule peak-group candidate”
Jalandhara 等 - 2016 - Effect of Sintering Temperature on the Optical Pro DOI: 10.1063/1.4946488 -
vertrouwen 1,0
“cm-1 cm-1 around 400-600 The peak observed around 447 and 555 are attributed to the stretching vibrations modes of Fe-O bonds, which”
Effect of calcination temperature on structural and morphological properties of bismuth ferrite nanoparticles DOI: 10.1016/j.ceramint.2020.09.220 -
Phosphate (PO4) vertrouwen 1,0
“The peaks at 433 cm-1 and 447 cm-1 were assigned to PO43υ2 vibration (bending mode), and the peaks at 1030 cm-1, 1047 cm-1 and 1079 cm-1 (arb.”
Gavinho 等 - 2023 - An Eco-Friendly Process to Extract Hydroxyapatite DOI: 10.3390/jfb14050279 -
vertrouwen 1,0
“bands around 447-558 is attributed to Cu-N Scanning electron microscopy (SeM).”
Ghoniem 等 - 2020 - Statistical modeling-approach for optimization of DOI: 10.1038/s41598-020-66101-x -
Protein vertrouwen 1,0
“Green AgNPs were previously synthesized using 2,341.94, 1,653.18, 1,521.43, and 668.58 A high absorptionpeakat3,446.64cm-1 correspondedtoN-H(protein) sp.”
Biogenic Silver Nanoparticles Synthesized by Lysinibacillus xylanilyticus MAHUQ-40 to Control Antibiotic-Resistant Human Pathogens Vibrio parahaemolyticus and Salmonella Typhimurium DOI: 10.3389/fbioe.2020.597502 -
vertrouwen 1,0
“447 cm-1 Along with the stretching vibrations of Si-O, the 872 band at a position similar 448”
Ruan 等 - 2020 - Improvement of the performance and microstructural DOI: 10.1016/j.conbuildmat.2020.120017) -
Amide vertrouwen 1,0
“The presence of BSA within the sample is cm-1, 447 confirmed by the C-N stretch present at 1231 as has previously been seen for other 448 liposomal preparations (Hui & Huang, 2021).”
Weaver 等 - 2022 - Microfluidic-mediated self-assembly of phospholipi DOI: 10.1016/j.ijpharm.2021.121347
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