What absorbs at 457 cm⁻¹ in an FTIR spectrum?
A band near 457 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
Jibu la haraka
A band near 457 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.
Ugawaji unaowezekana wa vikundi vya kazi
| Kikundi cha kazi | Ukweli unaounga mkono | Vyanzo vilivyotajwa | Uaminifu wa juu |
|---|---|---|---|
| Metal oxygen | 3 | 3 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Metal hydroxyl | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
Cheo kinaonyesha ushahidi wa fasihi uliokusanywa, si sheria moja yenye mamlaka. Thibitisha kila mara dhidi ya mazingira ya sampuli yako.
Nyenzo zinazowezekana
| Nyenzo | Vilele vya usaidizi | Vikundi vinavyoingiliana | Vyanzo vilivyotajwa |
|---|---|---|---|
| SiO2 | 457, 1739, 699 | Hydroxyl (O-H), Metal oxygen | 1 |
| Fe3O4 | 457, 2358, 1673 | Hydroxyl (O-H), Metal oxygen | 1 |
| cotton | 457, 1030, 1638 | Hydroxyl (O-H), Ester | 1 |
Nyenzo zinaonyeshwa tu wakati mkusanyiko sawa wa fasihi unaunga mkono bendi hii na angalau kilele kimoja cha ziada cha sifa.
Mantiki ya wigo
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 457 cm⁻¹ is usually not enough for material identification by itself.
Matumizi ya ulimwengu halisi
Aina hii ya swala ni ya kawaida katika utambuzi wa polima, uchunguzi wa plastiki isiyojulikana, utatuzi wa shida za QC, uthibitishaji wa nyenzo zilizosindikwa, na ukaguzi wa ugawaji wa kilele unaoungwa mkono na fasihi.
Makosa ya kawaida
- Kuchukua bendi moja iliyotengwa kama uthibitisho wa nyenzo bila kuangalia angalau kilele kimoja au viwili vya usaidizi.
- Kupuuza mwingiliano: vikundi vingi vya utendaji vinaweza kuchangia karibu na nambari ya wimbi sawa.
- Kuruka uthibitishaji wakati viongezi, mchanganyiko, uoksidishaji, au uchafuzi unaweza kupotosha wigo.
Ushauri wa uthibitishaji.
Wakati utata unabaki, thibitisha nadharia kwa kutumia DSC, GC-MS, au TGA, hasa kwa mchanganyiko, sampuli zilizoharibika, na polima zilizojazwa.
Fasihi nyuma ya ugawaji huu
-
C c single bond uaminifu 1.0
“The bands at 457 and 434 are ascribed to C-C-O ring deformation modes while 517 and 378 peaks are due to CO-C glycosidic link deformation and C-C-C ring deformation vibrations, respectively.”
Adebajo 等 - 2006 - Raman spectroscopic investigation of acetylation o DOI: 10.1016/j.saa.2005.07.045 -
uaminifu 1.0
“The other two vibrational peaks seen at 457 and 460 in OPC and clinker, respectively, might be resulted from the in-plane Si-O bending in SiO4 tetrahedra”
Micro-characterization of Dust and Materials of Dust Origin at a Cement Industry Located in Bangladesh DOI: 10.4209/aaqr.220109 -
Hydroxyl (O-H) uaminifu 1.0
“Fritsch et al.: OH stretching vibrations in serpentines 457 frequencies.”
Fritsch 等 - 2021 - Structural, textural, and chemical controls on the DOI: 10.5194/ejm-33-447-2021 -
uaminifu 1.0
“Additionally, two new peaks appeared at 457 cm-1 and 623 in the IR spectrum of ZnO@OFE NPs, which are characteristic of bending vibrations of Zn-O bonds, in agreement with previous reports [40].”
Improved Photocatalytic and Antioxidant Activity of Olive Fruit Extract-Mediated ZnO Nanoparticles DOI: 10.3390/antiox12061201 -
uaminifu 1.0
“Ti4+ 2p 2p the two strong peaks Ti (464.31 eV) and Ti (458.53 eV) are assigned to (TiO [27] and 1/2 3/2 2 Ti-OH) and the two peaks (457.01 and 462.44 eV) are attributed to Ti 2O [31].”
Deposition of TiO2 Thin Films on Wood Substrate by an Air Atmospheric Pressure Plasma Jet DOI: 10.3390/coatings9070441 -
Metal oxygen uaminifu 1.0
“The sharp peak positioned at 457 is of the presence of Zn-O stretching bonds.”
Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles against Selected Waterborne Bacterial and Yeast Pathogens DOI: 10.3390/molecules27113532 -
Ester uaminifu 1.0
“Metabolites 2014, 4 457 cm-1 the lipid content (2984-2780 methyl and methylene groups or stretching of ester bonds at cm-1), which can be explained only by different cellular biochemical ratios.”
Wagner 等 - 2014 - Surveillance of C-allocation in microalgal cells. DOI: 10.3390/metabo4020453 -
Metal oxygen uaminifu 0.9
“Peak at 457 cm-1 assigned to Fe-O stretching vibration.”
Fe3O4@SiO2@KIT-6@2-ATP@CuI as a catalyst for hydration of benzonitriles and reduction of nitroarenes DOI: 10.1038/s41598-023-34409-z
Una wigo wenye bendi hii?
Pakia wigo wako wa FTIR na upate ripoti kamili ya tafsiri — ugawaji wa vilele na marejeleo ya fasihi, ulinganishaji wa maktaba, na mlolongo wa ushahidi wenye kiwango cha uaminifu — kwa sekunde.