What absorbs at 4000 cm⁻¹ in an FTIR spectrum?
A band near 4000 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
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| Hydroxyl (O-H) | 4 | 3 | 0,9 |
| Carboxyl (COOH) | 1 | 1 | 0,9 |
| Amide | 1 | 1 | 0,7 |
| Water (H2O) | 1 | 1 | 0,7 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
Litteratur bag disse tildelinger
-
Hydroxyl (O-H) tillid 0,9
“Text: 'hydroxyl stretching region (2400-4000 cm-1)'”
Shamim 和 Dana - 2016 - Dependence of bonding interactions in Layered Doub DOI: 10.1016/j.molstruc.2016.06.045 -
tillid 0,9
“Snippet states 'stretching of O-H bonds' for band 4000-3500 cm-1.”
Jameel 等 - 2017 - Heavy fuel oil pyrolysis and combustion Kinetics DOI: 10.1016/j.jaap.2017.08.008 -
Carboxyl (COOH) tillid 0,9
“assigned to O-H stretching of -COOH in rGO”
Morsy 等 - 2022 - Preparation, investigation, and temperature sensin DOI: 10.1007/s10854-022-09247-w -
Hydroxyl (O-H) tillid 0,8
“Hydroxyl vibrations range”
Shatti 等 - 2022 - Co-precipitation method for the preparation of Mn- DOI: 10.15251/JOR.2022.184.473 -
Water (H2O) tillid 0,7
“Typical signals of water”
Ciprioti 等 - 2018 - Thermal Behavior and Structural Study of SiO2Poly DOI: 10.3390/ma11020275 -
Hydroxyl (O-H) tillid 0,7
“Part of the hydroxyl stretch region (3000-4000 cm-1).”
Meshkova 等 - 2018 - The role of the gradient film properties in silica DOI: 10.1002/ppap.201700093 -
Amide tillid 0,7
“Text: 'amide band peaks between 400 and 4000'”
Salomane 等 - 2021 - Iso-mukaadial acetate and ursolic acid acetate inh DOI: 10.1007/s12192-021-01212-6
Har du et spektrum med dette bånd?
Upload dit FTIR-spektrum og få en fuld tolkningsrapport — peak-tildelinger med litteraturhenvisninger, biblioteksmatch og en tillidsvurderet beviskæde — på få sekunder.
Fortolk mit spektrum