What absorbs at 1663 cm⁻¹ in an FTIR spectrum?
A band near 1663 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Amide | 5 | 5 | 0.95 |
| Hydroxyl (O-H) | 2 | 2 | 0.8 |
| Methoxy (OCH3) | 1 | 1 | 0.9 |
| Carbonyl (C=O) | 1 | 1 | 0.9 |
| Chlorine | 1 | 1 | 0.7 |
| C n single bond | 1 | 1 | 0.7 |
| Protein alpha helix | 1 | 1 | 0.3 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
-
Amide 置信度 0.95
“Explicitly stated in text: 'amide I band at 1663 cm-1'”
Jun 等 - 2019 - Degradation of full aromatic polyamide NF membrane DOI: 10.1016/j.polymdegradstab.2019.02.008 -
Amide 置信度 0.9
“Explicit assignment in text.”
Juarez-de la Rosa 等 - 2012 - Effects of thermal treatments on the structure of DOI: 10.1007/s10853-011-5878-9 -
Carbonyl (C=O) 置信度 0.9
“Explicit assignment: stretching peak at 1663 cm-1.”
Kwon 等 - 2008 - Change of chemical composition and hydrogen bondin DOI: 10.1002/app.25657 -
置信度 0.9
“Explicit assignment: 'originates from the vibration of the carbonyl bond'”
Aberkane 等 - 2019 - Electrochemical Sensor Based on Thioether Oligomer DOI: 10.1002/elan.201900060 -
置信度 0.9
“Explicit assignment: 'trigger the peaks at 1663 cm-1, 1455 cm-1, and 1349 cm-1' for methoxy group vibrations.”
Kumar 等 - 2022 - Influence of KI salt concentration on the hydroxyp DOI: 10.21203/rs.3.rs-770530/v1 -
Amide 置信度 0.9
“Text explicitly assigns 1663 cm-1 to amide I.”
Strong 等 - 2016 - Infrared spectroscopy detects changes in an amphib DOI: 10.1016/j.aquatox.2016.07.005 -
Hydroxyl (O-H) 置信度 0.8
“Peak at 1663 related to O-H bending.”
Jayaramudu 等 - 2019 - Swelling Behavior of Polyacrylamide-Cellulose Nano DOI: 10.3390/ma12132080 -
Hydroxyl (O-H) 置信度 0.8
“Characteristic peak at 1662.7 cm-1 region for phenols.”
Sharma 等 - 2022 - Modulation in Techno-Functional, Textural Properti DOI: 10.3390/molecules27227835
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