What absorbs at 564 cm⁻¹ in an FTIR spectrum?
A band near 564 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 6 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Phosphate (PO4) | 3 | 3 | 1.0 |
| C-O single bond | 1 | 1 | 0.9 |
| Metal oxygen | 1 | 1 | 0.8 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Phosphate (PO4) confidence 1.0
“bending vibration of PO3-”
Song 等 - 2022 - Properties of poly(lactic acid)walnut shellhydro DOI: 10.1038/s41598-022-15622-8 -
confidence 0.9
“Explicit assignment in text”
Avilala 和 Golla - 2019 - ANTIBACTERIAL AND ANTIVIRAL PROPERTIES OF SILVER N DOI: 10.13040/IJPSR.0975-8232.10(3).1223-28 -
C-O single bond confidence 0.9
“Explicit assignment in text”
Varma 和 Vasudevan - 2020 - Extraction, Characterization, and Antimicrobial Ac DOI: 10.1021/acsomega.0c01903 -
Phosphate (PO4) confidence 0.9
“Double bands at 564 and 604 belong to bending vibrations of P-O.”
Esfahani 等 - 2016 - Structural and morphological analysis of zinc inco DOI: 10.1590/S1517-707620160003.0055 -
Phosphate (PO4) confidence 0.9
“Explicit assignment”
Jadhav 等 - 2020 - Self-assembled kanamycin antibiotic-inorganic micr DOI: 10.1038/s41598-019-57044-z -
Metal oxygen confidence 0.8
“attributed to optical phonons of ZnO”
Reddy 等 - 2011 - Combustion synthesis, characterization and Raman s DOI: 10.1016/j.saa.2011.05.043
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