What absorbs at 574 cm⁻¹ in an FTIR spectrum?
A band near 574 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 7 cited sources
Snabbt svar
A band near 574 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 |
|---|---|---|---|
| Phosphate (PO4) | 3 | 2 | 1,0 |
| Metal oxygen | 2 | 2 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Chlorine | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 0 | 1,0 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
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 574 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 574 corresponds to Element Weight (%) Atomic (%) Cu-O stretching vibration.”
Green synthesis of bimetallic Pt@Cu nanostructures for catalytic oxidative desulfurization of model oil DOI: 10.1007/s40097-017-0223-8 -
förtroende 1,0
“The absorption bands observed at 752.97 and 574.11 cm-1 were assigned to C-Cl and C-Br stretching of alkyl halides, respectively.”
Facile Green Synthesis of Zinc Oxide Nanoparticles with Potential Synergistic Activity with Common Antifungal Agents against Multidrug-Resistant Candidal Strains DOI: 10.3390/cryst12060774 -
förtroende 1,0
“Then, a band at 574 associated with 4 4the Zn-O symmetric stretching vibration in the ZnO was also spotted.”
A Study on Optical Properties of Zinc Silicate Glass-Ceramics as a Host for Green Phosphor DOI: 10.3390/app10144938 -
Silicon (Si) förtroende 1,0
“cm-1 and 574 were the symmetrical stretching vibration of PO A comparison of the was due to the asymmetrical stretching vibration of Si-O-Si;”
Novel Hydroxyl-Containing Quaternary Ammonium Salt N-(2-Hydroxyethyl)-N, N-Dimethyl-3-[(1-Oxododecyl)amino]- 1-Propanaminium: Its Synthesis and Flotation Performance to Quartz DOI: 10.3390/min13050702 -
Phosphate (PO4) förtroende 1,0
“The peaks at 1044.38 cm-1 and 602.37 cm-1 were attributed to the asymmetric stretching vibration of P-O-P bond in PO 43-, the peak at 574.37 cm-1 indicated the in-plane bending vibration of P-O-P in PO (Lu et al., 1998;”
Wei 等 - 2020 - Investigating flotation behavior and mechanism of DOI: 10.37190/ppmp/119662 -
förtroende 1,0
“Specifically, a new peak attributed to Cr at 574.5 eV was observed in LR-EPI-8-Cr, indicatSpecifically, a new peak attributed to Crat 574.5 eV was observed in LR-EPI-8-Cr, indicatSpecifically, a new peak attributed to Cr at 574.5 eV was obs”
Efficient Removal of Heavy Metals from Aqueous Solution Using Licorice Residue-Based Hydrogel Adsorbent DOI: 10.3390/gels9070559 -
Phosphate (PO4) förtroende 0,9
“Explicit assignment: 'PO group at 574'”
Natasha 等 - 2008 - Fourier transform infrared study on sol-gel derive DOI: 10.4028/www.scientific.net/AMR.47-50.1185
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