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
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| 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 |
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。
這些指派背後的文獻
-
Hydrogen bond 信心 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 信心 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) 信心 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 信心 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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