What absorbs at 1296 cm⁻¹ in an FTIR spectrum?

快速回答

A band near 1296 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.

可能的官能基指派

排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。

可能的材料

僅當同一文獻庫支援此波段以及至少一個額外特徵峰時，才會顯示材料。

光譜邏輯

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 1296 cm⁻¹ is usually not enough for material identification by itself.

實際使用

此類查詢常見於聚合物鑑別、未知塑膠篩選、品管故障排除、再生材料驗證，以及基於文獻的峰值歸屬審查。

常見錯誤

• 將一個孤立的譜帶視為材料的證據，而未檢查至少一兩個支持峰。
• 忽略重疊：多個官能團可能在相同波數附近貢獻。
• 當添加劑、混合物、氧化或污染物可能扭曲譜圖時，跳過驗證。

驗證建議

當仍然存在歧義時，使用DSC、GC-MS或TGA驗證假設，特別是對於混合物、降解樣品和填充聚合物。

這些指派背後的文獻

• Amide 信心 1.0

  “The charfrom cm-1 acteristic peak at 1296 indicates the C N stretching vibration of the aromatic Downloaded amine units.”

  A facile synthesis of poly(aniline-co-o-bromoaniline) copolymer: Characterization and application as semiconducting material DOI: 10.1142/S0217979216500089
• 信心 1.0

  “It is clear that carbon, oxygen, and phosof GNP-g-APP shows a peak at 1296 correspectrum”

  Phosphorization of exfoliated graphite for developing flame retardant ethylene vinyl acetate composites DOI: 10.1016/j.jmrt.2020.04.085
• Amide 信心 1.0

  “cm21 is generally agreed that the band at 1296 is caused by C-N single, C vN double, and C wN triple bonds were obsp21sp3 b-C”

  Wei - 2001 - Formation of beta-C3N4 crystals at low temperature DOI: 10.1063/1.1327603
• Amide 信心 1.0

  “The bands at 1296 implied the stretching mode of C-N, which is associated with the presence of povidone.”

  Assiry 等 - 2023 - Microstructural and Elemental Characterization of DOI: 10.3390/app13074517
• 信心 1.0

  “A negative band at 1296 is assigned C b g to the C-F stretching modes of fluorotyrosine in wild-type”

  Hydrogen Bonding in Human Manganese Superoxide Dismutase Containing 3-Fluorotyrosine DOI: 10.1529/biophysj.105.060616
• Alkyl C-H 信心 1.0

  “The Raman 3 cm-1 bands located at 1296 and 1454 originated from CH and CH deformation vibrations, respectively.”

  Optical photothermal infrared spectroscopy with simultaneously acquired Raman spectroscopy for two-dimensional microplastic identification DOI: 10.1038/s41598-022-23318-2
• C=n 信心 1.0

  “Comparatively strong doublet ATR-FTIR bands at ~1557 and ~1542 cm-1 and bands at 1296 and cm-1 814 of layers #2 and #5 (ascribed by a solid heart sign in inset (a) of Figure S1) were assigned to the -C=N, asymmetric -C-N, symmetric -C-N, an”

  Multi-Modal Compositional Analysis of Layered Paint Chips of Automobiles by the Combined Application of ATR-FTIR Imaging, Raman Microspectrometry, and SEM/EDX DOI: 10.3390/molecules24071381
• Acetate 信心 1.0

  “Furcm-1 (origithermore, the intensity of band at 1296 nating from the C-O stretching vibrations of phenoFigure 6.”

  Radoman 等 - 2015 - Effect of surface modified TiO2 nanoparticles on t DOI: 10.3144/expresspolymlett.2015.83