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
Gán nhóm chức có thể
| Nhóm chức | Sự kiện hỗ trợ | Nguồn tham khảo | Độ tin cậy cao nhất |
|---|---|---|---|
| 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 |
Xếp hạng phản ánh bằng chứng tài liệu tích lũy, không phải một quy tắc duy nhất có thẩm quyền. Luôn xác nhận với ngữ cảnh mẫu của bạn.
Tài liệu tham khảo đằng sau các gán này
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Metal oxygen độ tin cậy 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 độ tin cậy 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) độ tin cậy 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 -
độ tin cậy 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 độ tin cậy 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) độ tin cậy 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 -
độ tin cậy 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 độ tin cậy 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
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