What absorbs at 1246 cm⁻¹ in an FTIR spectrum?
A band near 1246 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
Możliwe przypisania grup funkcyjnych
| Grupa funkcyjna | Fakty wspierające | Cytowane źródła | Najwyższa wiarygodność |
|---|---|---|---|
| Alkyl C-H | 3 | 3 | 1,0 |
| Nucleic acid | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Amino acid | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
Ranking odzwierciedla zgromadzone dowody literaturowe, a nie pojedynczą autorytatywną zasadę. Zawsze potwierdzaj w kontekście swojej próbki.
Literatura stojąca za tymi przypisaniami
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Alkyl C-H wiarygodność 1,0
“The peak around 1246 248 signifying C-H vibrations is also shifted to higher wave number.”
Microencapsulation of caffeine loaded in polysaccharide based delivery systems DOI: 10.1016/j.foodhyd.2018.04.001 -
Alkyl C-H wiarygodność 1,0
“The band at about cmˉ1 cm-1 1246 results from wagging vibration of C-H.”
Sathish 等 - 2013 - Nano Composite PVA-TiO2 Thin Films for OTFTs DOI: 10.4028/www.scientific.net/AMR.678.335 -
Alkyl C-H wiarygodność 1,0
“vibration band is observed at 1531 The low-frequenm(ringAO) cy region contains bands due to the stretching cm(cid:2)1and vibration at 1246 the methylene rocking cm(cid:2)1.”
Topacli 等 - 2006 - Infrared studies of pyroelectric Langmuir-Blodgett DOI: 10.1016/j.molstruc.2006.03.083 -
Hydrogen bond wiarygodność 1,0
“(-)/1656 (C=O) vibration24,25, the features including three dominant bands 1666 local changes in carbonyl stretching (-)cm-1 1687cm-1 (+)/1640 C=O combination bands, positive hydrogen bonding were deduced from characteristic 1246cm-1 groups”
Vibrational spectroscopy analysis of ligand efficacy in human M2 muscarinic acetylcholine receptor (M2R) DOI: 10.1038/s42003-021-02836-1 -
Hydroxyl (O-H) wiarygodność 1,0
“PU and PU-modified resins contain the characteristic bands of - OH (3346 cm-1), N-H (3340 and 1527 cm-1), C=O (1720 cm-1), C-O (1249 cm-1), O-H (1246 cm-1) and - cm-1) -O-H (1120 bonds, which clearly show the formation of a urethane linkage”
Nardeli 等 - 2019 - Preparation of Polyurethane Monolithic Resins and DOI: 10.3390/polym11111890 -
Protein wiarygodność 1,0
“In addition, the cm-1, cm-1, cm-1, cm-1, cm-1, cm-1 peaks around 1449 cm-1, 1407 cm-1, 1326 cm-1, 1246 cm-1, 1160 cm-1, and 1027 cm-1 were observed at typical peaks around 1449 1407 1326 1246 1160 and 1027 were all proteins before and after”
New Nanofibers Based on Protein By-Products with Bioactive Potential for Tissue Engineering DOI: 10.3390/ma13143149 -
Nucleic acid wiarygodność 1,0
“cm-1 can be seen for the CH lipid band at 2870 in the HWR region (Figure 3A), in the 1700-1500 differences can be seen for the CH3 lipid band at 2870 cm-1 in the HWR region (Figure 3A), in the 3 cm-1 protein band, and in the DNA bands at 12”
Ricciardi 等 - 2020 - An FTIR Microspectroscopy Ratiometric Approach for DOI: 10.3390/app10082974
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