What absorbs at 1197 cm⁻¹ in an FTIR spectrum?

Raskt svar

A band near 1197 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 1197 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

• Alkyl C-H konfidens 1.0

  “sativa at 1196.7202 ascribed to O-CH stretching which was absent in oil but present in band at 1196.7202 cm-1 ascribed to O-CH2 stretching which was absent in E.”

  Synthesis of Lipase-Immobilized CeO2 Nanorods as Heterogeneous Nano-Biocatalyst for Optimized Biodiesel Production from Eruca sativa Seed Oil DOI: 10.3390/catal10020231
• Acetate konfidens 1.0

  “The bands at 1432 and 1358 were caused by the bending of CH 2 cm-1 and C-H, while the band at 1197 was caused by the stretching of C-O groups from”

  Adsorption of Oil by 3-(Triethoxysilyl) Propyl Isocyanate-Modified Cellulose Nanocrystals DOI: 10.3390/pr10102154
• Acetate konfidens 1.0

  “1245 1245 -C-O stretching 1197 1197 1169”

  Spectroscopic studies of the quality of WCO (Waste Cooking Oil) fatty acid methyl esters DOI: 10.1051/bioconf/20181002019
• konfidens 1.0

  “The 4-2 42triple asymmetric S-O stretching in barite which also indicates the stretching of SO peak at 1197 cm-1 shows the asymmetric and bond vibration [27].”

  Characterization and Suitability of Nigerian Barites for Different Industrial Applications DOI: 10.3390/min11040360
• konfidens 0.9

  “Text: 'C-O stretching bands at 1171, 1197 and 1245'.”

  Kanakdande 等 - 2019 - Pineapple Waste and Wastewater Route for Biodiese DOI: 10.1590/1678-4324-2019180499
• Phosphate (PO4) konfidens 0.9

  “from DOPO-HQ”

  Wen 等 - 2018 - A novel oligomer containing DOPO and ferrocene gro DOI: 10.1016/j.polymdegradstab.2018.08.010