What absorbs at 1689 cm⁻¹ in an FTIR spectrum?
A band near 1689 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
Aseiniadau grŵp swyddogaethol posibl
| Grŵp swyddogaethol | Ffeithiau ategol | Ffynonellau a ddyfynnwyd | Hyder uchaf |
|---|---|---|---|
| Carbonyl (C=O) | 3 | 3 | 1.0 |
| Protein beta sheet | 2 | 1 | 0.9 |
| Carboxyl (COOH) | 1 | 0 | 0.8 |
Mae＇r safle＇n adlewyrchu tystiolaeth llenyddiaeth gronnwyd, nid rheol awdurdodol sengl. Cadarnhewch bob amser yn erbyn eich cyd-destun sampl.
Llenyddiaeth y tu ôl i＇r aseiniadau hyn
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Carbonyl (C=O) hyder 1.0
“Notably, the similar solvent, showed a similar spectral pattern cm-1 absorbance peaks around 1689, 1721 and 1740 qualitatively albeit different values of absorption denoted the absorption of the carbonyl functional group, intensity.”
Aziz 等 - 2020 - FTIR and HPLC-Based Metabolomics of Yacon Leaves E DOI: 10.22146/ijc.43453 -
Carbonyl (C=O) hyder 0.9
“Text mentions 'carbonyl region at (1689'”
Saeed 等 - 2020 - Effects of Anthracene Doping Ratio and UV Irradiat DOI: 10.21123/bsj.2020.17.2(SI).0652 -
Protein beta sheet hyder 0.9
“IR peak centered at 1689 cm-1 representing β-sheet content.”
Windt 等 - 2022 - Fourier Transform Infrared Spectroscopy for Assess DOI: 10.1021/acsomega.2c04216 -
Carbonyl (C=O) hyder 0.9
“Explicit assignment in text.”
Zhou 等 - 2021 - Preparation and Characterization of Lauric-Myristi DOI: 10.1155/2021/1828147
Oes gennych sbectrwm gyda＇r band hwn?
Llwythwch eich sbectrwm FTIR i fyny a chael adroddiad dehongli llawn — aseiniadau brig gyda chyfeiriadau llenyddiaeth, cyfateb llyfrgell, a chadwyn dystiolaeth â gradd hyder — mewn eiliadau.
Dehongli fy sbectrwm