What absorbs at 749 cm⁻¹ in an FTIR spectrum?
A band near 749 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 4 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 |
|---|---|---|---|
| Alkyl C-H | 2 | 2 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 0 | 1.0 |
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
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Hydroxyl (O-H) 置信度 1.0
“753 (2005) 749cm-1 [15] S.Naghibi,H.R.MadaahHosseini,M.A.FaghihiSani,Colloidalstabilityofdextran at and the hydroxyl stretching vibrations were inand dextran/poly ethylene glycol coated TiO2 nanoparticles by hydrothermal astensified.”
Gharagozlou 和 Naghibi - 2018 - Sensitization of ZnO nanoparticles by metal-free p DOI: 10.1016/j.jlumin.2017.12.020 -
置信度 1.0
“749cm-1 The bands located near is due to Sb doping, films The produced ZnO were evaluated for surface morwhereas Al and Sb codopant band is located near the 816cm-1 Cm-1 phology using a FESEM (JEOL-JSM 6100), as shown in [33].”
Verma 等 - 2022 - Morphological, Structural, and Optical Properties DOI: 10.1155/2022/6250706 -
Alkyl C-H 置信度 1.0
“The bands at 1267 cm-1 and 749 cm-1 are attributed to C-H and C-N deformation, respectively [45].”
Regularities of Encapsulation of Tolfenamic Acid and Some Other Non-Steroidal Anti-Inflammatory Drugs in Metal-Organic Framework Based on -Cyclodextrin DOI: 10.3390/pharmaceutics15010071 -
Metal oxygen 置信度 1.0
“However, the Al-O stretching vibration consistent with the flotation test results, which further proves cm-1 peak at 749 does not show obvious band shift, which”
Man 等 - 2019 - Flotation Separation of Diaspore and Kaolinite by DOI: 10.3389/fchem.2019.00813
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