What absorbs at 3344 cm⁻¹ in an FTIR spectrum?
A band near 3344 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) | 6 | 6 | 1.0 |
| N h | 2 | 2 | 0.9 |
| Carbohydrate | 1 | 1 | 0.7 |
| Carbonyl (C=O) | 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
-
Hydroxyl (O-H) 置信度 1.0
“Explicitly stated: '3344 are assigned to the hydroxyl functional groups (O-H)'”
Muvhiiwa 等 - 2019 - Study of biochar from pyrolysis and gasification o DOI: 10.1016/j.jece.2019.103391 -
Hydroxyl (O-H) 置信度 1.0
“Explicitly stated: 'presence of -OH functional group ... broad peak at 3344.21 cm-1'”
Akintelu 等 - 2020 - Characterization and Pharmacological Efficacy of S DOI: 10.1155/2020/2876019 -
Hydroxyl (O-H) 置信度 1.0
“Text: 'The peak at 3344 is ascribed to OH stretching vibration'”
Ji 等 - 2017 - Production of Xylose from Diluted Sulfuric Acid Hy DOI: 10.1016/j.carres.2009.01.015 -
Hydroxyl (O-H) 置信度 0.95
“Explicit assignment: 'Bands at around 3344 ... assigned respectively to OH- stretching'”
Hentati 等 - 2022 - Structural Characterization and Rheological and An DOI: 10.3390/md20090546 -
Hydroxyl (O-H) 置信度 0.9
“Explicit assignment: 'ν (O-H)'.”
Kusrini 等 - 2020 - Synthesis, characterization, and performance of gr DOI: 10.1016/j.apsusc.2019.145005 -
Hydroxyl (O-H) 置信度 0.9
“Band at 3344 cm-1 assigned to stretch of OH”
Araujo 等 - 2018 - Hydrothermal synthesis of bacterial cellulose-copp DOI: 10.1016/j.carbpol.2017.09.081 -
N h 置信度 0.9
“stretching vibration of N-H bonds”
Lu 等 - 2016 - Use of polyurea from urea for coating of urea gran DOI: 10.1186/s40064-016-2120-x -
N h 置信度 0.7
“Text: 'ν(N-H) hybrid sensor ... ν(C=O) stretching modes at 3344'”
De la Cruz-Guzman 等 - 2014 - A turn-on fluorescent solid-sensor for Hg(II) dete DOI: 10.1186/1556-276X-9-431
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