What absorbs at 1398 cm⁻¹ in an FTIR spectrum?
A band near 1398 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 7 cited sources
Možná přiřazení funkčních skupin
| Funkční skupina | Podpůrná fakta | Citované zdroje | Nejvyšší spolehlivost |
|---|---|---|---|
| Alkyl C-H | 4 | 4 | 1,0 |
| Fatty acid | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| C-S single bond | 1 | 1 | 1,0 |
Pořadí odráží nahromaděné literární důkazy, nikoli jediné autoritativní pravidlo. Vždy potvrďte v kontextu vašeho vzorku.
Literatura za těmito přiřazeními
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C-S single bond spolehlivost 1,0
“After polymerization of the aniline moiety, sharp of cm-1 peaks representing C N and C S appeared at 1398 and 617 stretching vibrations, respectively.”
Stopband attenuation of silica spheres by attaching aniline and polyaniline DOI: 10.1016/j.synthmet.2013.03.007 -
Alkyl C-H spolehlivost 1,0
“95 92 C-H stretching Alkyne ** 1398 99 95 90 O-Hbending Carboxylicacid 1543 99 94”
A Comparison of Water Imbibition and Controlled Deterioration in Five Orthodox Species DOI: 10.3390/agronomy12071486 -
Alkyl C-H spolehlivost 1,0
“cm-1, the aromatic C=C bond is tenuously situated at 1602 and 1491 At 1398 cm-1, there is a corresponding deformed CH and CH absorption band.”
Valoration of the Synthetic Antioxidant Tris-(Diterbutyl-Phenol)-Phosphite (Irgafos P-168) from Industrial Wastewater and Application in Polypropylene Matrices to Minimize Its Thermal Degradation DOI: 10.3390/molecules28073163 -
Alkyl C-H spolehlivost 1,0
“The References cm-1 weak peaks between 1398 and 1400 observed in TKSN, KSN, GSN, SSN and VSN are assigned to C-H stretching 1.”
Rajput 等 - 2014 - Standardization of Shodhita Naga with special refe DOI: 10.4103/0974-8520.153754 -
Carbonyl (C=O) spolehlivost 1,0
“cm-1, 1397.60 The carbonyl stretching in PVP was moved to a high frequency of 1721.08 cm-1.”
Development of β-cyclodextrin/polyvinypyrrolidone-co-poly (2-acrylamide-2-methylpropane sulphonic acid) hybrid nanogels as nano-drug delivery carriers to enhance the solubility of Rosuvastatin: An in vitro and in vivo evaluation DOI: 10.1371/journal.pone.0263026 -
Alkyl C-H spolehlivost 1,0
“COOCarbonyl group, Alkene Lipids, Proteins, PolyC=O of symmetric stretching → Carbonyl group, Alkene Lipids, Proteins, 1398 1402 tions in proteins, CH2 wagging vibrations → 1398 1402”
An In Vitro Study of the Antifungal Efficacy of Zinc Oxide Nanoparticles against Saccharomyces cerevisiae DOI: 10.3390/coatings12121988 -
Fatty acid spolehlivost 1,0
“cm-1 at around 1453 originated from asymmetric and symmetric C-H bending modes of proteins, while that at cm-1 COO1398 resulted from vibrations of fatty acids, amino acids and polypeptides.”
Application of Fourier transform infrared spectroscopy with chemometrics on postmortem interval estimation based on pericardial fluids DOI: 10.1038/s41598-017-18228-7
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