What absorbs at 3286 cm⁻¹ in an FTIR spectrum?
A band near 3286 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
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Hydroxyl (O-H) | 6 | 6 | 1.0 |
| N h | 3 | 3 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 0.9 |
| Amide | 2 | 1 | 0.9 |
排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。
這些指派背後的文獻
-
Hydroxyl (O-H) 信心 1.0
“Peak at 3285.75 cm-1 attributed to hydroxyl group.”
Sisak 等 - 2015 - Characterization of Cellulose Extracted from Oil P DOI: 10.1063/1.4931295 -
Hydroxyl (O-H) 信心 0.9
“Explicit assignment: OH stretching bands of alcohols and/or carboxylic acids.”
Chen 等 - 2019 - Baltic amber or Burmese amber FTIR studies on amb DOI: 10.1016/j.saa.2019.117270 -
Amide 信心 0.9
“Snippet: 'amide A (N-H) at 3286'”
Nasir 和 Apriani - 2018 - Synthesis and Property of Ag(NP)catechinGelatin DOI: 10.1088/1757-899X/293/1/012004 -
Hydroxyl (O-H) 信心 0.9
“Text: 'Hydroxyl stretching vibrations at 3286'”
Shahmaleki 等 - 2021 - Cellulose-Reinforced Starch Biocomposite Optimiza DOI: 10.1002/star.202000028. -
Hydroxyl (O-H) 信心 0.9
“Explicitly assigned to O-H stretching band for alcohol and carboxylic acid.”
Abdel-Aty 等 - 2023 - Garden cress gum and maltodextrin as microencapsul DOI: 10.1007/s10068-022-01171-3 -
Hydroxyl (O-H) 信心 0.9
“O-H stretching at 3285.62 cm-1.”
Shoukat 等 - 2022 - Development of beta-cyclodextrinpolyvinypyrrolido DOI: 10.1371/journal.pone.0263026 -
Hydroxyl (O-H) 信心 0.9
“Strong absorption due to O-H and N-H bonds, confirming proteins and polysaccharides.”
Wang 等 - 2023 - Biological Selenite Reduction, Characterization an DOI: 10.3390/molecules28093793 -
N h 信心 0.9
“Broad band of N-H stretching vibration at 3286 cm-1.”
Zakaria 等 - 2015 - Effect of Hydrochloric Acid Concentration on Morph DOI: 10.1155/2015/218204
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