What absorbs at 3348 cm⁻¹ in an FTIR spectrum?
A band near 3348 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 7 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 |
|---|---|---|---|
| N h | 2 | 2 | 0.9 |
| Hydroxyl (O-H) | 2 | 2 | 0.8 |
| Secondary amine | 1 | 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
-
N h 信心 0.9
“NH group located at 3348 cm-1.”
Jiang 等 - 2021 - Phosphine oxide for reducing flammability of ethyl DOI: 10.1515/epoly-2021-0027 -
Secondary amine 信心 0.9
“NH stretching vibration of secondary amine group.”
Kovacs 等 - 2020 - Influence of Aqueous Solubility-Enhancing Excipien DOI: 10.3390/pharmaceutics12040385 -
信心 0.9
“Explicit assignment in text: 'em 3445 e 3348 ... provenientes da deformação axial simétrica e assimétrica'”
Welter Nardi 等 - 2015 - A source of nitrogen incorporation in particulate DOI: 10.1590/0104-1428.1967 -
Hydroxyl (O-H) 信心 0.8
“Identified as O-H stretching.”
Ulfa 等 - 2019 - Adsorption of Cu(II) in Aqueous Solution by Modifi DOI: 10.1088/1755-1315/239/1/012008 -
N h 信心 0.8
“Observed for 4-ATP.”
Kalayci 等 - 2021 - EXPERIMENTAL AND THEORETICAL INVESTIGATIONS (FTIR, DOI: 10.4314/bcse.v35i3.11 -
Hydroxyl (O-H) 信心 0.7
“Deconvolution peak in OH stretching region.”
Munoz 等 - 2007 - FTIR study of water clusters in water-triethylamin DOI: 10.1016/j.chemphys.2007.03.015 -
信心 0.5
“Peak at 3348 cm-1 mentioned as significant but no specific group assignment.”
Oliveira 等 - 2014 - Functionalization of Natural Cork Composite with M DOI: 10.1155/2014/685829
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