What absorbs at 3276 cm⁻¹ in an FTIR spectrum?
A band near 3276 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
Možná přiřazení funkčních skupin
| Funkční skupina | Podpůrná fakta | Citované zdroje | Nejvyšší spolehlivost |
|---|---|---|---|
| Hydroxyl (O-H) | 4 | 4 | 0,9 |
| N h | 2 | 1 | 0,9 |
| Amide | 1 | 1 | 0,9 |
| Alkyl C-H | 1 | 1 | 0,9 |
| C n single bond | 1 | 0 | 0,9 |
| Carbonyl (C=O) | 1 | 0 | 0,9 |
Pořadí odráží nahromaděné literární důkazy, nikoli jediné autoritativní pravidlo. Vždy potvrďte v kontextu vašeho vzorku.
Literatura za těmito přiřazeními
-
Hydroxyl (O-H) spolehlivost 0,9
“Explicit assignment: 'strong peaks at 3276 that coincides with stretchingmixedwithOHvibrationcommonlyfoundwithaliphatic'”
Cheng 等 - 2021 - Landfill leachate wastewater treatment to facilita DOI: 10.1016/j.chemosphere.2020.127829 -
spolehlivost 0,9
“Text: 'shift of the peak towards lower wavenumber at 3276 cm-1, suggesting the formation of OH2+'”
Shamsudin 等 - 2015 - Bifunctional ionic liquid in conductive biopolymer DOI: 10.1016/j.ssi.2015.05.008 -
Hydroxyl (O-H) spolehlivost 0,9
“Explicit assignment: 'O-H (at 3276 cm-1)' and 'belongs to O-H in cellulose'”
Guo 等 - 2020 - New Experiment of Diesel Exhaust Treatment by Atmo DOI: 10.3390/catal10050577 -
Amide spolehlivost 0,9
“Explicit assignment: secondary amide band at 3276 cm-1 due to N-H stretching vibrations.”
Salvador Conejo-Davila 等 - 2021 - Role of the Anilinium Ion on the Selective Polymer DOI: 10.3390/polym13142349 -
Hydroxyl (O-H) spolehlivost 0,8
“Peak within 3000-3600 cm-1 region known for O-H stretching.”
Alimi 等 - 2022 - Microstructural and physicochemical properties of DOI: 10.1016/j.heliyon.2022.e09148 -
Hydroxyl (O-H) spolehlivost 0,8
“Characteristic peak for -OH groups.”
Li 等 - 2023 - Effect of degumming degree on the structure and te DOI: 10.1038/s41598-023-33844-2 -
spolehlivost 0,7
“Explicit assignment in text, but group vague.”
Guan 等 - 2022 - Spray dried inhalable ivacaftor co-amorphous micro DOI: 10.1016/j.ijpharm.2022.121859.
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