What absorbs at 1680 cm⁻¹ in an FTIR spectrum?
A band near 1680 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) | 12 | 12 | 0.95 |
| Amide | 3 | 3 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 0.8 |
| N h | 1 | 1 | 0.8 |
| Protein beta sheet | 1 | 1 | 0.8 |
| Aromatic ring | 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
“Assigned to turn structure”
Shimizu 等 - 2010 - Pressure Effect on the Conformational Equilibrium DOI: 10.1088/1742-6596/215/1/012153 -
Carbonyl (C=O) 置信度 0.95
“Text: '1680 causes vibration of the C=O area present in the lactone ring system'”
Zhang 等 - 2015 - Effects of Pulsed Electric Fields (PEF) on Vitamin DOI: 10.3390/ijms161024159 -
Amide 置信度 0.9
“Explicit assignment: 'amide peak at 1680 cm-1'.”
Rouhani 等 - 2016 - Purification and functionalization of nanodiamond DOI: 10.1016/j.msec.2016.02.075 -
Carbonyl (C=O) 置信度 0.9
“Explicit assignment: 'C=O stretching at 1680'”
Sukhlaaied 和 Riyajan - 2016 - Green robust pH-temperature-sensitive maleated pol DOI: 10.1007/s00289-016-1609-3 -
Carbonyl (C=O) 置信度 0.9
“Peak at 1680 cm-1 corresponds to stretching of carbonyl (amide functional group).”
Ahmad 等 - 2021 - Synthesis of gemifloxacin conjugated silver nanopa DOI: 10.1080/21691401.2021.2003805 -
置信度 0.9
“Explicit assignment in text.”
Defeyt 等 - 2017 - Polyurethane coatings used in twentieth century ou DOI: 10.1186/s40494-017-0124-7 -
Carbonyl (C=O) 置信度 0.9
“Text states 'hydrogen bonded C O (1680cm-1)'”
Ettori 等 - 2011 - Permeability and chemical analysis of aromatic pol DOI: 10.1016/J.MEMSCI.2011.03.044 -
Carbonyl (C=O) 置信度 0.9
“Text: 'marker at 1680 indicates ... carbonyl band'”
Hofko 等 - 2017 - Repeatability and sensitivity of FTIR ATR spectral DOI: 10.1617/s11527-017-1059-x
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