What absorbs at 1692 cm⁻¹ in an FTIR spectrum?
A band near 1692 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 4 cited sources
Możliwe przypisania grup funkcyjnych
| Grupa funkcyjna | Fakty wspierające | Cytowane źródła | Najwyższa wiarygodność |
|---|---|---|---|
| Nucleic acid | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Protein beta sheet | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 0 | 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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Hydrogen bond wiarygodność 1,0
“hydrogen bonds of these molecules may be possible because The spectrum at 77 K has positive peaks at 1692, 1687, of the motion of a hydrogen bonding acceptor.”
Iwata 等 - 2003 - Light-induced structural changes in the LOV2 domai DOI: 10.1021/bi0345135 -
Protein wiarygodność 1,0
“The spectra of the two proteins in m), and heat of transition or perature of denaturation (T SDS also showed decreases in the intensities of the 1692 cm-1”
Boye 等 - 2004 - Thermal stability of beta-lactoglobulins A and B DOI: 10.1017/S0022029904000184 -
Carboxyl (COOH) wiarygodność 1,0
“cm-1, cm-1, cm-1, cm-1 bands at 1692 1530 1266 and 724 in the GA Raman spectrum (Figure 2b) can be related to the carboxylic group in the non-polymerized molecule.”
Vibrational Study (Raman, SERS, and IR) of Plant Gallnut Polyphenols Related to the Fabrication of Iron Gall Inks DOI: 10.3390/molecules27010279 -
Nucleic acid wiarygodność 1,0
“Infrared Physics and Technology 102 (2019) 103007 which are both derived from adenocarcinoma, share a discriminant at References 1692cm-1 associated with nucleic acids [37], which is absent from”
A novel FTIR analysis method for rapid high-confidence discrimination of esophageal cancer DOI: 10.1016/j.infrared.2019.103007
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