What absorbs at 526 cm⁻¹ in an FTIR spectrum?
A band near 526 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 5 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 2 | 2 | 0.9 |
| Phosphate (PO4) | 2 | 1 | 0.8 |
| Metal oxygen | 1 | 1 | 0.9 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Silicon-oxygen (Si-O) confidence 0.9
“assigned to Si-O-Al vibrations”
Lubis 等 - 2021 - Modification of Oxidized Starch Polymer with Nanoc DOI: 10.1007/s10924-021-02101-w -
Metal oxygen confidence 0.9
“M-O stretching peak at 526 cm-1”
Selvi 等 - 2020 - Optical, electrical, mechanical, and thermal prope DOI: 10.1007/s13726-020-00806-8 -
confidence 0.9
“Bands at 526, 620, 834, 950 coupled to Y zeolite formation structure.”
Dal Pozzo 等 - 2019 - Free fatty acids esterification catalyzed by acid DOI: 10.1039/c8ra10248a -
Silicon-oxygen (Si-O) confidence 0.9
“Explicit assignment in text.”
Koohestani 等 - 2021 - Composite of bentonite and cyclodextrin as an effi DOI: 10.1038/s41598-021-84349-9 -
Phosphate (PO4) confidence 0.8
“Snippet: 'Vibration O-P-O 527 526'”
Mansour 等 - 2016 - Effect of preparation conditions on the nanostruct DOI: 10.1007/s13204-015-0509-4
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