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
Snabbt svar
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.
Möjliga identifieringar av funktionella grupper
| Funktionell grupp | Stödjande fakta | Citerade källor | Högsta förtroende |
|---|---|---|---|
| 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 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
Möjliga material
| Material | Stödjande toppar | Överlappande grupper | Citerade källor |
|---|---|---|---|
| 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 |
Material visas endast när samma litteraturpool stöder detta band och minst en ytterligare karakteristisk topp.
Spektrumlogik
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.
Användning i verkligheten
Denna typ av fråga är vanlig inom polymeridentifiering, screening av okänd plast, felsökning av kvalitetskontroll, verifiering av återvunnet material och litteraturstödd toppidentifieringsgranskning.
Vanliga misstag
- Behandla ett isolerat band som bevis på ett material utan att kontrollera minst en eller två stödjande toppar.
- Ignorerar överlapp: flera funktionella grupper kan bidra nära samma vågtal.
- Hoppa över validering när tillsatser, blandningar, oxidation eller föroreningar kan förvränga spektrat.
Verifieringsråd
När oklarhet kvarstår, validera hypotesen med DSC, GC-MS eller TGA, särskilt för blandningar, nedbrutna prover och fyllda polymerer.
Litteratur bakom dessa identifieringar
-
förtroende 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 -
förtroende 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 förtroende 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) förtroende 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 förtroende 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 förtroende 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 förtroende 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 förtroende 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
Har du ett spektrum med detta band?
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