What absorbs at 1292 cm⁻¹ in an FTIR spectrum?

Raskt svar

A band near 1292 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 1292 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

• Amide konfidens 1.0

  “þ A A f c cm-1), cm-1), C=O stretching (1638 CH wagging (1437 and 2 cm-1) C-N stretching (1292 of optimized sample CPN-0 a Fig.”

  Jothi 等 - 2021 - Proton conducting polymer electrolyte based on cor DOI: 10.1007/s11581-020-03792-2
• Ring structure konfidens 1.0

  “C-O-C glycosidic linkage vibration (Sym) 1127 C-O-C bridging vibration 1147 C-C ring vibration 1292”

  Cuiffo 等 - 2021 - Thermochemical degradation of cotton fabric under DOI: 10.1186/s40691-021-00263-8
• C-O single bond konfidens 1.0

  “6c, at RH, the shoulder peaks red shift from 1344 to implying that only the 1695cm-1 ν(C=O) located at 1718 and are attributed to of NaNO component effloresces, and GA cannot be crystal3 1292cm-1 ν(C-O) crystalline GA, and the band at and r”

  Ma 等 - 2022 - A comprehensive study on hygroscopic behaviour and DOI: 10.5194/acp-22-10955-2022
• Acetate konfidens 1.0

  “cm-1 cm-1 related to C-C and C-O stretching at 1292 and 1044 and bands at 1240 from C-O-C cm-1 asymmetric stretching and at 1168 from C-O symmetric stretching are observed.”

  Synthesis and Characterization of Inulin-Based Responsive Polyurethanes for Breast Cancer Applications DOI: 10.3390/polym12040865
• konfidens 1.0

  “Similarly, the peaks at 1292.27 and 1042.70 correspond to the stretching vibration type of strong fluoro compound and medium amine groups, respectively.”

  Isolation and Characterization of a Novel Actinomycete Isolated from Marine Sediments and Its Antibacterial Activity against Fish Pathogens DOI: 10.3390/antibiotics11111546
• Amide konfidens 1.0

  “The peak at 1292 cm-1 is assigned to the C-N bending vibration [37], while the ones at 1037 cm-1 and 694 cm-1 correspond to the presence of Si-O-Si and Si-O-C on the graphene sheets surface [9].”

  Synthesis and Characterization of Some Graphene Oxide Powders Used as Additives in Hydraulic Mortars DOI: 10.3390/app112311330
• Aromatic ring konfidens 1.0

  “The band at 1292 belongs to the aromatic Table 3 FTIR assignments for the NaOH-catalyzed reaction secondary amine.”

  Santiago-Medina 等 - 2017 - Polycondensation Resins by Lignin Reaction with (P DOI: 10.7569/JRM.2017.634142
• Phosphate (PO4) konfidens 0.9

  “Explicit assignment: '1292 cm21' associated with same group”

  Gajjar 等 - 2014 - Histology Verification Demonstrates That Biospectr DOI: 10.1371/journal.pone.0082416