What absorbs at 525 cm⁻¹ in an FTIR spectrum?
A band near 525 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 |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 5 | 5 | 1,0 |
| Metal oxygen | 5 | 5 | 1,0 |
| Silicon (Si) | 3 | 3 | 1,0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1,0 |
| Carbonate | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 0 | 1,0 |
| Phosphorus | 1 | 0 | 1,0 |
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Tài liệu tham khảo đằng sau các gán này
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Metal oxygen độ tin cậy 1,0
“BiO octahedral structure possesses 6 M cm-1 peaks at 525 and 450 due to the bending vibration of Bi-O.”
Francis 等 - 2016 - Optical nonlinearity in multiferroic bismuth ferri DOI: 10.1016/j.jallcom.2016.07.094 -
Metal oxygen độ tin cậy 1,0
“Wave number cm-1 The peak at 525 should be a stretching of Cu-O, which”
Padil 和 Cernik - 2013 - Green synthesis of copper oxide nanoparticles usin DOI: 10.2147/IJN.S40599 -
độ tin cậy 1,0
“One possible explanation for the appearance of the band at 525 cm-l could be due to the incorporation of Al atoms into the CON building units, leading to”
Park 等 - 2020 - Insight into the crystallization mechanism of the DOI: 10.1016/j.micromeso.2020.110213 -
Carboxyl (COOH) độ tin cậy 1,0
“All three samples show a desorption peak with maximum at around 525 K, as in the case of the AlPO sample, that would correspond to weak acid sites, and an additional desorption peak at higher temperature (with maximum at around 625 K), whic”
Alvaro-Munoz 等 - 2013 - Effect of silicon content on the catalytic behavio DOI: 10.1016/j.cattod.2013.04.031 -
Metal oxygen độ tin cậy 1,0
“cm-1 band indicates the presence of quartz, the 625 band stems from out-of-plane Al-O-Si cm-1 cm-1 vibrations, and the bands at 525 and 467 are related to Al oct-O-Si, and Si-O-Si bending vibrations, respectively.”
Rehydration Driven Na-Activation of Bentonite—Evolution of the Clay Structure and Composition DOI: 10.3390/ma14247622 -
độ tin cậy 1,0
“The main reduction peak at 490 K may be related to the direct reduction of extra-framework octahedral (Cu(II) whereas the reduction peak at 525 K may be related to the reduction of copper oxides occurring in zeolite pores in line with earli”
High activity of mononuclear copper present in the framework of CuSiBEA zeolites in the selective catalytic reduction of NO with NH3 DOI: 10.1016/j.micromeso.2015.11.065 -
độ tin cậy 1,0
“cm-1 A strong complex band at 1037 is attributed to the stretching vibration of the Si-O groups cm-1 cm-1 of the tetrahedral sheets and the absorption bands at 525 and 467 belong to Si-O-Al cm-1,”
Du 等 - 2020 - Synthesis, Property and Mechanism Analysis of a No DOI: 10.3390/min10020128 -
độ tin cậy 1,0
“The weak for the loss of the physically adsorbed water and the second 525cm-1 153.9∘ band at is bending vibration of Si-O-Al and the C corresponding to the endothermic valley appears at 834cm-1”
Li 等 - 2014 - Preparation and Characterization of Montmorillonit DOI: 10.1155/2014/167402
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