What absorbs at 3320 cm⁻¹ in an FTIR spectrum?
A band near 3320 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 |
|---|---|---|---|
| Hydroxyl (O-H) | 5 | 5 | 1.0 |
| N h | 4 | 4 | 0.9 |
| Alkyl C-H | 2 | 2 | 0.9 |
| Water (H2O) | 1 | 1 | 0.9 |
| Amide | 1 | 0 | 0.9 |
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
“Assignment: 'broad band at 3320 assigned to Mg-coordinated water molecules'”
Maranescu 等 - 2018 - The corrosion inhibitor behavior of iron in saline DOI: 10.1515/pac-2018-0513 -
Hydroxyl (O-H) 置信度 1.0
“explicit assignment”
Zhang 等 - 2018 - Fabrication of high-performance PVAPAN composite DOI: 10.1007/s12182-017-0204-z -
Hydroxyl (O-H) 置信度 0.95
“Explicit: 'starch showed characteristic bands at 3320 cm due to O-H'”
Aguirre-Loredo 等 - 2023 - Improvements of thermal and mechanical properties DOI: 10.1016/j.heliyon.2023.e16782 -
Alkyl C-H 置信度 0.9
“Peak at 3320 cm-1 assigned to -CH stretching.”
Sahudin 等 - 2022 - Enhancement of Skin Permeation and Penetration of DOI: 10.3390/cosmetics9060114 -
N h 置信度 0.9
“Characteristic IR absorption band at 3320 cm-1 corresponding to H- monomers.”
Zhang 等 - 2013 - The durability of clear polyurethane coil coatings DOI: 10.1016/j.polymdegradstab.2012.12.003 -
Hydroxyl (O-H) 置信度 0.9
“Text: 'major peaks at 3320 ... corresponding to OH'”
Ab Jalil 等 - 2022 - Physical and Chemical Characteristics of Agricultu DOI: 10.3390/su142315751 -
N h 置信度 0.9
“Explicit assignment: 'N-H stretch in the region 3280 and 3320'”
Al Hawesah 等 - 2021 - Improving the Temperature Sensitivity of Bitumen f DOI: 10.3311/PPci.18351 -
Hydroxyl (O-H) 置信度 0.9
“Peak at 3320 cm-1 assigned to OH groups stretching.”
Aprilia 等 - 2019 - Composites polyvinyl alcohol filled with nanocellu DOI: 10.1051/matecconf/201926804012
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