What absorbs at 1679 cm⁻¹ in an FTIR spectrum?

可能的官能团归属

排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。

这些分配背后的文献

• Carbonyl (C=O) 置信度 1.0

  “2 shows that the dominant factors FTIR, which aside from showing bands typical of chitosan, influencing conductivity are the input amounts of TPAI and there is now a strong presence of new carbonyl bands at 1679 DMSO into the GPE system.”

  Conductivity or rheology? Tradeoff for competing properties in the fabrication of a gel polymer electrolyte based on chitosan-barbiturate derivative DOI: 10.1007/s11581-018-2515-5
• Acetate 置信度 1.0

  “Free DMF molecules give rise to several bands, among them at 1679 at 1679 cm-1 (C=O stretching) and 1095 cm-1 (H3C-N stretching).”

  Butova 等 - 2023 - In Situ FTIR Spectroscopy for Scanning Accessible DOI: 10.3390/nano13101675
• Protein beta sheet 置信度 1.0

  “In calculations of the relative content of different secondary structures an average of the cm-1, β-sheet two bands at 1679 and 1630 assigned to keratins with a secondary structure, was used”

  Greve 等 - 2008 - ATR-FTIR, FT-NIR and near-FT-Raman spectroscopic s DOI: 10.3233/SPE-2008-0365
• Hydrogen bond 置信度 1.0

  “NIF-NIF intermolecular hydrogen bonding is further indicated by the cm-1 cm-1 presence of strong stretching vibrations at 1679 and 1689 that are also sensitive to intermolecular interactions (Cilurzo et al.”

  Physical properties and solubility studies of Nifedipine-PEG 1450/HPMCAS-HF solid dispersions DOI: 10.1039/C5PY01136A
• N-O bond 置信度 1.0

  “No significant differences between groups were found for the areas of peaks 1655 cm-1 and 1679 cm-1.”

  Effects of Cannabis Use on the Protein and Lipid Profile of Olfactory Neuroepithelium Cells from Schizophrenia Patients Studied by Synchrotron-Based FTIR Spectroscopy DOI: 10.3390/biom10020329
• Protein alpha helix 置信度 1.0

  “View Article Online Paper Nanoscale cm-1 α-helix, preferential, anisotropic behavior and the discovery of the characteristic of the peak of around 1679 is cm-1 effect β-sheet, β-turn keratin polarization (see Fig.”

  Stanic 等 - 2018 - The chemical fingerprint of hair melanosomes by in DOI: 10.1039/c8nr03146k
• Protein beta sheet 置信度 1.0

  “(cm-1) amide I (C=O stretching, C-N stretching, β-sheet 1693 CNN deformation) of protein secondary structures [33,34] amide I (C=O stretching, C-N stretching, β-sheet 1679 CNN deformation) of protein”

  Application of FTIR Spectroscopy to Detect Changes in Skeletal Muscle Composition Due to Obesity with Insulin Resistance and STZ-Induced Diabetes DOI: 10.3390/ijms232012498