What absorbs at 3535 cm⁻¹ in an FTIR spectrum?
A band near 3535 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
Gán nhóm chức có thể
| Nhóm chức | Sự kiện hỗ trợ | Nguồn tham khảo | Độ tin cậy cao nhất |
|---|---|---|---|
| Hydroxyl (O-H) | 6 | 6 | 1,0 |
| Fatty acid | 2 | 2 | 1,0 |
| N n bond | 1 | 1 | 1,0 |
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Tài liệu tham khảo đằng sau các gán này
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Hydroxyl (O-H) độ tin cậy 1,0
“7 (2007) 721 cm-1 Mg2+ C is peaked at 3535 and is associated with OH ⎯ vibration perturbed by ions in the lattice.”
Choubey 等 - 2007 - Influence of doping on OH absorption in LiNbO3 cry DOI: 10.1002/crat.200610894 -
độ tin cậy 1,0
“The Fourier transform infrared (FTIR) spectra of these coesite crystals taken in the OH cm(cid:3)1, stretching region consist of two sharp peaks at 3535 and 3500 which were assigned previously to two different boron-based n n point defects,”
Deon 等 - 2009 - Coupled boron and hydrogen incorporation in coesit DOI: 10.1127/0935-1221/2009/0021-1843 -
Hydroxyl (O-H) độ tin cậy 1,0
“The mixture was titrated spectra of blending oil, cottonseed oil and CCl cm-1 was related to the O-H funcsorption band at 3535 with 0.01 M of potassium hydroxide and shaken vigorously tional groups present in oils, revealing the characteris”
Hu 等 - 2019 - Rapid Determination of Acid Value of Edible Oils v DOI: 10.5650/jos.ess18156 -
Fatty acid độ tin cậy 1,0
“3690cm(cid:1)1, the other two peaks, at 3618 and Notably, the use of the quartz cuvette can not only provide an are almost cm(cid:1)1 accurate and long optical path length for measuring the FTIR specunchanged, indicating that the band at 35”
Determination of the acid values of edible oils via FTIR spectroscopy based on the OH stretching band DOI: 10.1016/j.foodchem.2016.06.035 -
Hydroxyl (O-H) độ tin cậy 1,0
“The baseline points were optimized for each band: The oxidative stability of the fresh samples was determined by cm(cid:0) cm(cid:0) 1) 1, the alcohol band (3535 was measured using 4600 the hyRancimat (Oil Stability Index, OSI).”
A study of the dynamic changes of stability taking place during virgin olive oil storage period examined by mesh cell-FTIR spectroscopy DOI: 10.1016/j.lwt.2022.114160 -
Fatty acid độ tin cậy 1,0
“could be an indication that the production of free fatty acids and their ageing, as well as the intensity of the CO Moreover,theadditionalpresenceofthebandat3535cm-1suggested conversion into lead carboxylates did not occur at the same rate.”
Sotiropoulou 等 - 2018 - Advanced analytical investigation on degradation m DOI: 10.1016/j.microc.2018.03.007 -
Hydroxyl (O-H) độ tin cậy 0,9
“Explicitly assigned as OH stretching vibration in text.”
Del Vecchio 等 - 2019 - High-Temperature Evolution of Point Defect Equilib DOI: 10.3390/min9100574
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