What absorbs at 1353 cm⁻¹ in an FTIR spectrum?

Stutt svar

A band near 1353 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.

Mögulegar úthlutun virkra hópa

Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.

Möguleg efni

Efni birtast aðeins þegar sama bókmenntasafn styður þessa band og að minnsta kosti einn viðbótar einkennandi hámark.

Rófrök

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 1353 cm⁻¹ is usually not enough for material identification by itself.

Raunveruleg notkun

Þessi tegund fyrirspurna er algeng við auðkenningu fjölliða, skimun óþekktra plasttegunda, bilanaleit í gæðaeftirliti, staðfestingu endurunnins efnis og bókmenntabakkaða endurskoðun á hápunktum.

Algeng mistök

• Meðhöndla eina einangraða öldulengd sem sönnun á efni án þess að athuga að minnsta kosti einn eða tvo stuðningstoppa.
• Hunsa skörun: mörg virkir hópar geta lagt sitt af mörkum nálægt sömu bylgjutölunni.
• Að sleppa staðfestingu þegar aukefni, blöndur, oxun eða mengun geta brenglað litrófið.

Staðfestingarráðgjöf

Þegar tvíræðni er eftir, staðfestu tilgátuna með DSC, GC-MS eða TGA, sérstaklega fyrir blöndur, niðurbrotin sýni og fylltar fjölliður.

Ritlist á bak við þessar úthlutanir

• Amide öryggi 1,0

  “cm-1 cm-1 cm-1 cm-1 to 720 (a) and from 1850 to 1300 (b) ranging from 1850 070007-4 In PEI-F-ICJ spectrum, the intensity of bands relative to asymmetric stretching vibration of carbonyl imide (1722 cm-1) cm-1) and C-N stretching vibration (”

  Sonego 等 - 2016 - Chemical Changes in Polyetherimide (PEI) Joined by DOI: 10.1063/1.4965539
• Acetate öryggi 1,0

  “The band at 1353 cm-1 can be attributed to C-O-H bending cm-1 cm-1 OH deformation in the band at 1474 [44,45].”

  Pore Blocking by Phenolates as Deactivation Path during the Cracking of 4-Propylphenol over ZSM-5 DOI: 10.3390/catal11060721
• Alkyl C-H öryggi 1,0

  “cm-1, C-H new bands at 1353 and 848 corresponding to the Consequently, the resulting hydrogel would assume a cm-1, Cbending vibration, and at 1252 corresponding to the ∼71 composition containing wt % lignin.”

  Teng 等 - 2017 - Preparation and Properties of Hydrogels Based on P DOI: 10.1021/acsomega.6b00296
• Amide öryggi 1,0

  “The band at cm-1 corresponds to the amide groups of proteins which could be released by aromatic carbon 1638.38 compounds and carbon double bonds as well as alkene groups (-C-H stretch) [50], while these at 1399.65, 1384.55 cm-1 1081.96cm-1”

  Wypij 等 - 2022 - Novel Antibacterial, Cytotoxic and Catalytic Activ DOI: 10.4014/jmb.2205.05006
• öryggi 0,9

  “Explicit assignment: disorder (D-band).”

  Optimization and Characterization of Mesoporous Sulfonated Carbon Catalyst and Its Application in Modeling and Optimization of Acetin Production DOI: 10.3390/molecules25225221
• öryggi 0,9

  “Explicitly assigned as D band.”

  Extracellular electron uptake from carbon-based π electron surface-donors: oxidation of graphite sheets by Sulfobacillus thermosulfidooxidans probed by Raman and FTIR spectroscopies DOI: 10.1039/c9ra03628h