What absorbs at 558 cm⁻¹ in an FTIR spectrum?
A band near 558 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
Quick answer
A band near 558 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Phosphate (PO4) | 2 | 2 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| S s | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Possible materials
| Material | Supporting peaks | Overlapping groups | Cited sources |
|---|---|---|---|
| Zinc Oxide | 558, 1627, 1638 | Metal oxygen, Alkyl C-H, Amide | 1 |
| chitosan | 558, 1650, 1655 | Alkyl C-H, Amide | 1 |
| silver nanoparticles | 558, 1636, 1631 | Alkyl C-H, Amide | 1 |
| cotton fabric | 558, 900, 862 | Alkyl C-H, Amide | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 558 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literature behind these assignments
-
confidence 1.0
“The band at 558 in the parent at 558 and 435 cm-1 sample LaFeO is attributed to the Fe-O stretching vibration and the band at 435 correspond to the”
Rai 和 Thakur - 2017 - Effect of co-substitution on structural, optical, DOI: 10.1016/j.jallcom.2016.11.407 -
confidence 1.0
“The characteristic Fourier transform infrared spectrometal-oxygen scopy (FTIR) bands appeared at 658 and 558 cm-1 revealed the spinel-type crystal structure.”
Hydrothermal synthesis of spherical NiCO2O4 nanoparticles as a positive electrode for pseudocapacitor applications DOI: 10.1007/s10971-017-4504-y -
Metal oxygen confidence 1.0
“RHE, two The reduction of ammonia exhibited a similar trend under different cm-1 cm-1, and 558 belonging to Ni-O peaks began to appear at 479 initialconcentrationandtheremovalrateofammoniagraduallyslowed vibrations of NiOOH (Fig.”
Ni(II)/Ni(III) redox couple endows Ni foam-supported Ni2P with excellent capability for direct ammonia oxidation DOI: 10.1016/j.cej.2020.126795 -
Phosphate (PO4) confidence 1.0
“The characteristic peaks of the PO43groups are TiO 2-Ag 3PO 4 present at 1010 cm-1 and 558 cm-1 corresponding to P-O stretching vibrations [44,45].”
Hamrouni 等 - 2020 - Enhanced Solar Light Photocatalytic Activity of Ag DOI: 10.3390/nano10040795 -
Metal oxygen confidence 1.0
“A new peak at 776 assigned to the Mn-O bond was found in cm-1 MnDBC, F 1M 3DBC, and F 3M 1DBC, while a new peak at 558 belonging to the Fe-O bond was found in FDBC, F 1M 3DBC, and F 3M 1DBC, which illustrated the formation of Fe oxides, Mn”
Liang 等 - 2022 - Adsorption of Atrazine by Fe-Mn-Modified Biochar DOI: 10.3390/agronomy12123097 -
C c single bond confidence 1.0
“Also, a peak at 558 indicates cm-1 the (C-C) alkane stretching.”
Mondal 等 - 2023 - Recycling of silver nanoparticles from electronic DOI: 10.1038/s41598-023-40668-7 -
S s confidence 1.0
“The amide II peak becomes and is not a The absorption peak at 558 cm-1 defined S-S signal, evolving into a shoulder whose contribution corresponds to the bond associated with the”
Salinas Dominguez 等 - 2020 - Antibody Immobilization in Zinc Oxide Thin Films a DOI: 10.1021/acsomega.0c02583 -
Amide confidence 1.0
“558cm-1 2852cm-1 (Fe=O), 2921 and (Ccles, which are at 2𝜃/(∘) H,stretchingvibration),1455and1375cm-1 (C-N,stretching”
Sun 等 - 2017 - Activity and Stability of Trypsin Immobilized onto DOI: 10.1155/2017/1457072
Have a spectrum with this band?
Upload your FTIR spectrum and get a full interpretation report — peak assignments with literature citations, library matches, and a confidence-rated evidence chain — in seconds.