What absorbs at 906 cm⁻¹ in an FTIR spectrum?
A band near 906 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 906 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 |
|---|---|---|---|
| Oxygen heterocycle | 5 | 4 | 1,0 |
| Alkyl C-H | 4 | 4 | 1,0 |
| Methoxy (OCH3) | 3 | 3 | 1,0 |
| Methacrylate | 3 | 3 | 1,0 |
| C-O single bond | 3 | 3 | 1,0 |
| Acetate | 3 | 3 | 1,0 |
| Secondary amine | 3 | 3 | 1,0 |
| Ring structure | 2 | 2 | 1,0 |
| C n single bond | 2 | 2 | 1,0 |
| Amide | 2 | 2 | 1,0 |
| Silicon hydride | 2 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Silicon (Si) | 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.
Mogelijke materialen
| Materiaal | Ondersteunende pieken | Overlappende groepen | Geciteerde bronnen |
|---|---|---|---|
| silica | 906, 1100, 1080 | Alkyl C-H, Methacrylate | 1 |
| polystyrene | 906, 1020, 1600 | Alkyl C-H, Methacrylate, Methoxy (OCH3) | 1 |
| polymer | 906, 1718, 1722 | Alkyl C-H, Methacrylate, Methoxy (OCH3) | 1 |
Materialen worden alleen getoond wanneer dezelfde literatuurpool deze band en ten minste één extra karakteristieke piek ondersteunt.
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 906 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
-
Phosphate (PO4) vertrouwen 1,0
“The bright section is a blank area which and by HPO bands at 906 and 852 resulted from the incision of the ultramicrotome.”
Li 等 - 2014 - Mineralogical characterization of calcification in DOI: 10.1180/minmag.2014.078.4.01 -
Alkyl C-H vertrouwen 1,0
“In asym(C-H) sym(C-H) cm-1 are assigned to the and of (cid:228) (cid:228) C-N+ part a, the intensity of the stretching modes at 906 and 3-N+ moiety, respectively.”
Nikoobakht 和 El-Sayed - 2001 - Evidence for bilayer assembly of cationic surfacta DOI: 10.1021/la010530o -
Acetate vertrouwen 1,0
“OH bending motion is demonstrated by the band at 1322 cm-1 cm-1 Furthermore, the band at 1014 was attributed to the C-O stretching, whereas the band at 906”
Structural and UV-blocking properties of carboxymethyl cellulose sodium/CuO nanocomposite films DOI: 10.1038/s41598-023-28032-1 -
Oxygen heterocycle vertrouwen 1,0
“The other bands seen at 906 and 846 ambient temperature to give the initiator-immobilized NCG were due to asymmetric stretching of the epoxy groups.”
Surface-initiated atom transfer radical polymerization grafting from nanoporous cellulose gels to create hydrophobic nanocomposites DOI: 10.1039/c8ra04163f -
Silicon (Si) vertrouwen 1,0
“56 cm-1 absorption band at 906 is observed which could be attributed to an increase of the 57 cm-1 number of Si-H groups.”
Effects of 400 keV electrons flux on two space grade silicone rubbers DOI: 10.1016/j.matchemphys.2013.05.002 -
Aromatic ring vertrouwen 1,0
“The peak at 906 was attributed to the out-of-plane bending mode of the hydrogen atoms in the phenyl ring of polystyrene.”
Fabrication of Europium-Doped Barium Titanate/Polystyrene Polymer Nanocomposites Using Ultrasonication-Assisted Method: Structural and Optical Properties DOI: 10.3390/polym14214664 -
Oxygen heterocycle vertrouwen 1,0
“The bands at 906 and 837 were attributed to β-CD the stretching vibration of the epoxide in the linker.”
Evaluation of Polyethylene Glycol Crosslinked -CD Polymers for the Removal of Methylene Blue DOI: 10.3390/app10134679 -
N h vertrouwen 1,0
“The 1480 cm-1 3 (symmetric NH bend), the 906 cm-1 (NH 3+/CH rock) and the 3081 cm-1 (N-H stretch) 3+ 3”
Characterization of a New Low Temperature Encapsulation Method with Ethylene-Vinyl Acetate under UV Irradiation for Perovskite Solar Cells DOI: 10.3390/app12105228
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