What absorbs at 3299 cm⁻¹ in an FTIR spectrum?
A band near 3299 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 5 cited sources
Možná přiřazení funkčních skupin
| Funkční skupina | Podpůrná fakta | Citované zdroje | Nejvyšší spolehlivost |
|---|---|---|---|
| Water (H2O) | 3 | 2 | 1,0 |
| Hydroxyl (O-H) | 3 | 2 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Chitosan | 1 | 1 | 1,0 |
| N h | 1 | 0 | 1,0 |
Pořadí odráží nahromaděné literární důkazy, nikoli jediné autoritativní pravidlo. Vždy potvrďte v kontextu vašeho vzorku.
Literatura za těmito přiřazeními
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Chitosan spolehlivost 1,0
“Similar peaks were also found in chitosan (3361cm-1, 2867cm-1), (3335cm-1, 2895cm-1) (3299cm-1, 2922cm-1 peanut shell and skin powder”
Meng 等 - 2020 - Effects of peanut shell and skin extracts on the a DOI: 10.1016/j.ijbiomac.2020.02.235 -
Hydroxyl (O-H) spolehlivost 1,0
“The NMR spectra clearly depict the interN-H/O-H stretching 3299.09 3530.15 3565.78 C-H”
Multi-spectroscopic monitoring of molecular interactions between an amino acid-functionalized ionic liquid and potential anti-Alzheimer's drugs DOI: 10.1039/d0ra06323a -
Hydroxyl (O-H) spolehlivost 1,0
“The spectra of PEG 400 showed O-H stretching at 3299 cm-1, cm-1, C-H stretching at 2819 C-H bending at 1415 and C-O-H stretching was”
Ashfaq 等 - 2022 - Enhancement of the Solubility and Bioavailability DOI: 10.3390/pharmaceutics14030482 -
Amide spolehlivost 1,0
“LLM confirmed rule peak-group candidate”
Nur Hanani 等 - 2013 - Development and Characterization of Biodegradable DOI: 10.3390/foods2010001 -
Siloxane (Si-O-Si) spolehlivost 1,0
“More importantly, it might also (C=O stretching vibration of carboxyl) and the slight shift of OH stretching vibration (shift from 3302 be attributed to the formation of Si-O-Si bonds within VTMS through the hydrolysis of the methyl cm-1 to”
Revealing the Interface Structure and Bonding Mechanism of Coupling Agent Treated WPC DOI: 10.3390/polym10030266
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