What absorbs at 1621 cm⁻¹ in an FTIR spectrum?
A band near 1621 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 |
|---|---|---|---|
| Carbonyl (C=O) | 3 | 3 | 0.9 |
| Amide | 1 | 1 | 0.95 |
| C c single bond | 1 | 1 | 0.9 |
| C=n | 1 | 1 | 0.9 |
| Hydroxyl (O-H) | 1 | 1 | 0.9 |
| Methyl | 1 | 1 | 0.8 |
| Alkene (C=C) | 1 | 1 | 0.8 |
| Water (H2O) | 1 | 1 | 0.8 |
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
“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 -
置信度 0.9
“Explicit assignment: 3419 and 1621 characteristic for H-O-H stretching.”
Li 等 - 2020 - Investigating the effect of carbon nanotube on ear DOI: 10.1016/j.cemconcomp.2020.103513 -
置信度 0.9
“Attributed to bending mode of water.”
Mohamed 和 Dughaish - 2012 - Microstructural and optical investigations of Ce-d DOI: 10.1080/14786435.2011.642320 -
Carbonyl (C=O) 置信度 0.9
“Explicit assignment in text.”
Olukanni 等 - 2019 - Influence of redox mediators and media on methyl r DOI: 10.1007/s42452-019-0668-0 -
Hydroxyl (O-H) 置信度 0.9
“Band at 1621 cm-1 corresponds to bending vibration of hydroxyl groups.”
Javad Farhangi 等 - 2021 - MOF-Mediated Synthesis of CuOCeO2 Composite Nanop DOI: 10.3390/jfb12040053 -
Carbonyl (C=O) 置信度 0.9
“Part of range 1602-1621 cm-1 for C=O stretching.”
Kramarova 等 - 2021 - Synthesis, Structure and Electrochemical Propertie DOI: 10.3390/molecules26123548 -
C=n 置信度 0.9
“Text: 'C=N present at the region 1621 was due to stretching vibration mode'”
Mohammadi 等 - 2020 - Green synthesis of Ag NPs on magnetic polyallylami DOI: 10.1038/s41598-020-63756-4 -
C c single bond 置信度 0.9
“C-C stretch at 1621.”
Simonsen 等 - 2020 - Formation of zinc oxalate from zinc white in vario DOI: 10.1186/s40494-020-00467-z
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