What absorbs at 557 cm⁻¹ in an FTIR spectrum?
A band near 557 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
Aseiniadau grŵp swyddogaethol posibl
| Grŵp swyddogaethol | Ffeithiau ategol | Ffynonellau a ddyfynnwyd | Hyder uchaf |
|---|---|---|---|
| Metal oxygen | 5 | 5 | 1.0 |
| Phosphate (PO4) | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1.0 |
| Silicon (Si) | 2 | 2 | 1.0 |
| Carbonate | 1 | 1 | 1.0 |
| Phosphorus | 1 | 1 | 1.0 |
| Silanol (Si-OH) | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
Mae＇r safle＇n adlewyrchu tystiolaeth llenyddiaeth gronnwyd, nid rheol awdurdodol sengl. Cadarnhewch bob amser yn erbyn eich cyd-destun sampl.
Llenyddiaeth y tu ôl i＇r aseiniadau hyn
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Metal oxygen hyder 1.0
“LLM confirmed rule peak-group candidate”
Mesoporous magnetite nanoparticles synthesis using the Peltophorum pterocarpum pod extract, their antibacterial efficacy against pathogens and ability to remove a pollutant dye DOI: 10.1016/j.molstruc.2018.10.042 -
Carbohydrate hyder 1.0
“663 662 Out of plane bending vibration of intermolecular H-bonded O H group 666 558 557 Torsional vibration of pyranose ring 557 cm-1 cm-1”
Kasyapi 等 - 2013 - Bionanowhiskers from jute Preparation and charact DOI: 10.1016/j.carbpol.2012.10.021 -
Hydroxyl (O-H) hyder 1.0
“Salama et al./Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 136 (2015) 1816-1826 805 905 473 goethite OH bending bands 557 Type 3”
Spectroscopic characterization of iron ores formed in different geological environments using FTIR, XPS, Mössbauer spectroscopy and thermoanalyses DOI: 10.1016/j.saa.2014.10.090 -
hyder 1.0
“reveals the characteristic vibrational bands at 557, 688, 717, 881, 935 and 1039 The cm-1 vibrational modes at 557 and 717 are assigned to the structural vibrations of yttrium-oxygen cm-1 (Y-O) bonds, the peak at 688 to the stretching mode”
Luminescence and electron spin resonance studies of narrow-band UVB emitting Gd3+ doped Y2SiO5 nanophosphors synthesized by sol-gel method DOI: 10.1016/j.ijleo.2021.167228 -
Metal oxygen hyder 1.0
“The metal-oxygen band at 557 corresponded to intrinsic cm-1 stretching vibrations of metal at the tetrahedral site, while the metal-oxygen band found at 425 was assigned to octahedral-metal stretching of Fe-O [53-55].”
Yadav 等 - 2020 - Synthesis and Characterization of Amorphous Iron O DOI: 10.3390/nano10081551 -
Silanol (Si-OH) hyder 1.0
“attributed to the Si-O stretching vibration [18, 19], a peak causeMgislesselectronegativethanH,andconsequently, at799cm-1 resultsfromthe symmetricSi-Ostretchingvithe substitution of H (2.1) in Si-OH by Mg (1.2) would decm-1 bration, and pea”
Zhang 等 - 2019 - Influence of Magnesia on Demoulding Strength of Co DOI: 10.1515/rams-2019-0008 -
hyder 1.0
“990cm-1 powder of white MTA Angelus root repair shows the presPlus, bands at have been assigned to asymmetric 43ence oftricalcium silicate (aliteofhatrurite,Ca stretching vibration of phosphate (PO ) [4], but those at 3(SiO 4)O;card 557cm-1”
Abu Zeid 等 - 2017 - Chemistry and Bioactivity of NeoMTA Plus (TM) vers DOI: 10.1155/2017/8736428 -
Amide hyder 1.0
“Moreover, in the spectra of the control unheated films, the intensity cm-1 557 of the band of amide I at 1630 was always lower than that of the band of the amide II at cm-1, 558 1550 regardless of the Mw of chitosan/CDP, as a consequence of”
Effect of glucose-induced Maillard reaction on physical, structural and antioxidant properties of chitosan derivatives-based films DOI: 10.1016/j.carbpol.2020.117341
Oes gennych sbectrwm gyda＇r band hwn?
Llwythwch eich sbectrwm FTIR i fyny a chael adroddiad dehongli llawn — aseiniadau brig gyda chyfeiriadau llenyddiaeth, cyfateb llyfrgell, a chadwyn dystiolaeth â gradd hyder — mewn eiliadau.
Dehongli fy sbectrwm