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

Raskt 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.

Mulige funksjonelle gruppe-tilordninger

Rangeringen gjenspeiler akkumulert litteraturbevis, ikke en enkelt autoritativ regel. Bekreft alltid mot prøvekonteksten din.

Mulige materialer

Materialer vises kun når samme litteraturbase støtter dette båndet og minst en annen karakteristisk topp.

Spektrum-logikk

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.

Virkelig bruk

Denne typen forespørsel er vanlig i polymeridentifikasjon, screening av ukjent plast, feilsøking i kvalitetskontroll, verifisering av resirkulert materiale og litteraturstøttet gjennomgang av topptilordning.

Vanlige feil

• Behandle ett isolert bånd som bevis på et materiale uten å sjekke minst en eller to støttende topper.
• Ignorerer overlapping: flere funksjonelle grupper kan bidra nær samme bølgetall.
• Hopp over validering når tilsetningsstoffer, blandinger, oksidasjon eller forurensning kan forvrenge spekteret.

Verifiseringsråd

Når tvetydighet gjenstår, valider hypotesen med DSC, GC-MS eller TGA, spesielt for blandinger, nedbrutte prøver og fylte polymerer.

Litteratur bak disse tilordningene

• konfidens 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
• konfidens 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 konfidens 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 konfidens 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 konfidens 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 konfidens 0.9

  “Fe-O stretching and bending”

  Jalandhara 等 - 2016 - Effect of Sintering Temperature on the Optical Pro DOI: 10.1063/1.4946488
• konfidens 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
• konfidens 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