What absorbs at 412 cm⁻¹ in an FTIR spectrum?
A band near 412 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
Hurtigt svar
A band near 412 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 |
|---|---|---|---|
| Metal oxygen | 2 | 2 | 0,9 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| C=n | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
Mulige materialer
| Materiale | Understøttende toppe | Overlappende grupper | Citerede kilder |
|---|---|---|---|
| Chitosan | 412, 1650, 1655 | Methacrylate, C-O single bond, Methoxy (OCH3) | 1 |
| polyethylene | 412, 1737, 1720 | Methacrylate, Methoxy (OCH3), C-O single bond | 1 |
| Glycerol | 412, 1585, 1630 | Methacrylate, C-O single bond, Methoxy (OCH3) | 1 |
| ZnO | 412, 1400, 3430 | Metal oxygen, Methacrylate, C-O single bond | 1 |
| zinc oxide | 412, 1627, 1638 | Metal oxygen, Methacrylate, C-O single bond | 1 |
Materialer vises kun, når den samme litteraturpulje understøtter dette bånd og mindst en yderligere karakteristisk top.
Spektrumlogik
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 412 cm⁻¹ is usually not enough for material identification by itself.
Anvendelse i virkeligheden
Denne type forespørgsel er almindelig ved polymeridentifikation, screening af ukendt plast, fejlfinding i kvalitetskontrol, verifikation af genanvendt materiale og litteraturunderstøttet gennemgang af peak-tildeling.
Almindelige fejl
- Behandling af et isoleret bånd som bevis på et materiale uden at kontrollere mindst en eller to understøttende toppe.
- Ignorerer overlap: flere funktionelle grupper kan bidrage nær samme bølgetal.
- Spring validering over, når additiver, blandinger, oxidation eller forurening kan forvrænge spektret.
Verifikationsrådgivning
Når tvetydighed fortsat består, valider hypotesen med DSC, GC-MS eller TGA, især for blandinger, nedbrudte prøver og fyldte polymerer.
Litteratur bag disse tildelinger
-
tillid 1,0
“3 60,687 = = 412 3430 Weak deformation vibration O S O 411 62,778 1 59,348”
A case study of poly (aryl ether sulfone) hemodialysis membrane interactions with human blood: Molecular dynamics simulation and experimental analyses DOI: 10.1016/j.cmpb.2020.105742 -
Amide tillid 1,0
“(2) disappears in had new absorption peaks at 1,640 cm-1 1,412cm-1, 1,556 and corresponding to amide I peak (1,652 cm-1),”
Khodaei 等 - 2018 - Covalent Immobilization of Protein A on Chitosan a DOI: 10.1093/chromsci/bmy070 -
tillid 1,0
“For pastes with a 3:7 proportion (Fig 9a), 412 this band disappeared, which represents a complete consumption of the calcium 413”
Moraes 等 - 2019 - Production of bamboo leaf ash by auto-combustion f DOI: 10.1016/j.conbuildmat.2019.03.007 -
Hydrogen bond tillid 1,0
“M412 deprotonated retinylidene SB such as seen for the BR 3 Depending on the strength of the hydrogen bonding, bands M412 transition, where the SB of is deprotonated (27).”
Proton Transfers in a Channelrhodopsin-1 Studied by Fourier Transform Infrared (FTIR) Difference Spectroscopy and Site-directed Mutagenesis* DOI: 10.1358/dot.2011.47.1.1543306 -
Alkyl C-H tillid 1,0
“The and compared in the pure oil and in the deuterated fatty 349 412 cm-1 CC-H olefinic different peak from unsaturated lipids at 3008 tissues.”
Rejasse 等 - 2022 - Plastic biodegradation Do Galleria mellonella Lar DOI: 10.1021/acs.est.1c03417 -
C=n tillid 1,0
“This indicated that the homogeneous complex had been prepared could be due to υ(C=N) and υ(C-O), and the bands at about 605 and 412 cm-1 were associated with successfully.”
Base-Free Selective Oxidation of Glycerol over LDH Hosted Transition Metal Complexes Using 3% H2O2 as Oxidant DOI: 10.3390/catal6070101 -
Metal oxygen tillid 0,9
“Assigned to transverse optical stretching mode of ZnO.”
Kuthirummal 等 - 2016 - Synthesis and characterization of Ar-annealed zinc DOI: 10.1063/1.4964316 -
Metal oxygen tillid 0,9
“Explicit assignment: 'absorption bands at 419 and 412 attributed to the Zn-O stretching vibration mode'”
Gum Arabic As Natural Stabilizing Agent In Green Synthesis Of ZnO Nanofluids For Antibacterial Application DOI: 10.1016/j.jece.2019.103331
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