What absorbs at 507 cm⁻¹ in an FTIR spectrum?

Snabbt svar

A band near 507 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

Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.

Möjliga material

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 507 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

  “But the sample annealed at 800 has weak peak emerged at 507 which is related to nitrogen related local vibration as reported in the reference [26].”

  Enhancement of Al-N co-dopant solubility in ZnO by high temperature thermal annealing DOI: 10.1016/j.ceramint.2018.10.005
• förtroende 1,0

  “A around 507 cm-1 is clearly observed in Figure 2 and can be attributed to Au and Bu vibracm-1”

  Surface Morphology and Optical Properties of Hafnium Oxide Thin Films Produced by Magnetron Sputtering DOI: 10.3390/ma16155331
• C c single bond förtroende 1,0

  “506 In situ FTIR spectroscopy has revealed that the three 507 472 to a C-C stretching of benzenoid rings.”

  Benyoucef 等 - 2005 - Synthesis and in situ MRS characterization of cond DOI: 10.1016/j.eurpolymj.2004.10.047
• Silicon hydride förtroende 1,0

  “cm(cid:0) C-- 1 C stretching peak at 1640 attenuated or disappeared, whereas On the FTIR spectrum for the activated CoCr surface, the disappearance (CoCr-OH-Si45-GO12h, emerged in all incubated multilayer systems of chromium oxide (III) rel”

  Covalent immobilization of graphene oxide on biomedical grade CoCr alloy by an improved multilayer system assembly via Silane/GO bonding DOI: 10.1016/j.matchemphys.2022.126296
• Metal oxygen förtroende 1,0

  “Pressure (MPa) 0.1 122.38 305.34 399.23 517.59 606.87 (cm-1) 432.33 433.02 433.20 433.50 433.50 434.83 M-O vibrational peak (cm-1) AlIV-O-Si 507.27 507.43 507.80 508.46 508.13 509.46 vibrational peak (cm-1)”

  The Behavior of Water in Orthoclase Crystal and Its Implications for Feldspar Alteration DOI: 10.3390/cryst12081042
• Metal oxygen förtroende 0,9

  “Fe-O stretching and bending”

  Jalandhara 等 - 2016 - Effect of Sintering Temperature on the Optical Pro DOI: 10.1063/1.4946488
• förtroende 0,8

  “Explicit assignment in text.”

  Phytochemical screening, polyphenols, flavonoids and tannin content, antioxidant activities and FTIR characterization of Marrubium vulgare L. from 2 different localities of Northeast of Morocco DOI: 10.1016/j.heliyon.2020.e05609
• förtroende 0,6

  “Text: 'at 1004, 825, and 507'”

  Characterisation of the Bioactivity and the Solubility of a New Root Canal Sealer DOI: 10.1016/j.identj.2023.04.003