What absorbs at 1670 cm⁻¹ in an FTIR spectrum?
A band near 1670 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 | 6 | 5 | 0.9 |
| Carbonyl (C=O) | 6 | 5 | 0.9 |
| Alkene (C=C) | 1 | 1 | 0.9 |
| Alkyl C-H | 1 | 1 | 0.8 |
| Protein random coil | 1 | 1 | 0.8 |
| Protein alpha helix | 1 | 1 | 0.8 |
| Protein beta turn | 1 | 1 | 0.8 |
| Lignin | 1 | 1 | 0.7 |
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
-
置信度 1.0
“explicit assignment”
Purhanudin 和 Awang - 2016 - Formation of chemical bonds and morphological stud DOI: 10.1063/1.4966804 -
Carbonyl (C=O) 置信度 0.9
“Due to carbonyl group contained in D-galactose.”
Moustafa 等 - 2021 - Preparation and Characterization of Super-Absorbin DOI: 10.3390/polym13244308 -
Alkene (C=C) 置信度 0.9
“Characteristic band of AA at 1670 cm-1.”
Ji 等 - 2021 - Characterization of functionalized coatings prepar DOI: 10.1016/j.porgcoat.2015.03.020. -
Carbonyl (C=O) 置信度 0.9
“Strong stretching vibration at 1670 cm-1 assigned to C=O.”
Li 等 - 2020 - Preparation and Self-Healing Properties of Clinker DOI: 10.3390/ma13030589 -
Amide 置信度 0.9
“Explicit assignment: 'amide I band at 1670'”
Lojewski 等 - 2011 - Reflective and photoacoustic infrared spectroscopi DOI: 10.1007/s00339-011-6512-z -
Amide 置信度 0.9
“Explicit assignment: 'band around 1670 cm-1 for the amide group (C=O stretching vibration)'”
Shabanian 和 Basaki - 2013 - SYNTHESIS AND CHARACTERIZATION OF NEW HEAT RESISTA DOI: 10.4314/bcse.v27i3.10 -
Amide 置信度 0.9
“Text explicitly assigns 1670 cm-1 to amide I vibration.”
Stripp 等 - 2021 - Electron inventory of the iron-sulfur scaffold com DOI: 10.1042/BCJ20210224 -
Protein beta turn 置信度 0.8
“Text mentions major bands from 1670 cm-1 corresponding to these structures.”
Ma 等 - 2001 - Study of oat globulin conformation by Fourier tran DOI: 10.1021/jf010053f
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