What absorbs at 1653 cm⁻¹ in an FTIR spectrum?
A band near 1653 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 8 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 |
|---|---|---|---|
| Amide | 16 | 13 | 0.95 |
| Carbonyl (C=O) | 7 | 6 | 1.0 |
| Protein alpha helix | 4 | 1 | 0.9 |
| Alkene (C=C) | 3 | 3 | 1.0 |
| Carbonate | 1 | 1 | 0.9 |
| N h | 1 | 1 | 0.9 |
| Nucleic acid | 1 | 1 | 0.8 |
| Carboxyl (COOH) | 1 | 1 | 0.8 |
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
-
Alkene (C=C) 信心 1.0
“explicit assignment”
Rout 等 - 2017 - A green approach to produce silver nano particles DOI: 10.1016/j.surfin.2017.03.004 -
Carbonyl (C=O) 信心 1.0
“Peak at 1653 due to carbonyl group”
Hamouda 等 - 2020 - Bioprocessing strategies for cost-effective simult DOI: 10.1038/s41598-020-70251-3 -
Amide 信心 0.95
“Explicit assignment in text: 'characteristic peaks at 1653 and 1621 (Amide I)'”
Peng 和 Chen - 2018 - Preparation and Assessment of Heat-Treated alpha-C DOI: 10.3390/ma11101883 -
Amide 信心 0.9
“Text: 'AmideIheight(ca.1653cm-1)'”
Ji 等 - 2016 - Using non-invasive molecular spectroscopic techniq DOI: 10.1016/j.saa.2015.11.036 -
Alkene (C=C) 信心 0.9
“Explicit assignment: 'stretching vibration of C=C at 1653'.”
Suryani 和 Zaimahwati - 2014 - Fourrier Transform Infrared and Gel Permeation Chr DOI: 10.4028/www.scientific.net/AMM.525.162 -
Amide 信心 0.9
“Text: 'bands represented in 1653 (amide I)'”
Yalcin 等 - 2020 - Evaluation of phytotherapeutic activities and phyt DOI: 10.1007/s10661-020-8207-4 -
Amide 信心 0.9
“Amide I peak at 1653 cm-1.”
van Thor 等 - 2005 - Assignments of the Pfr-Pr FTIR difference spectrum DOI: 10.1021/jp052323t -
Carbonyl (C=O) 信心 0.9
“estiramiento del grupo carbonilo (C=O) de la unidad acetilada del polisacárido”
Carrero Gallardo 等 - 2019 - Synthesis and characterization of a novel biomater DOI: 10.1590/S1517-707620190003.0710
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