What absorbs at 3595 cm⁻¹ in an FTIR spectrum?
A band near 3595 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
Réponse rapide
A band near 3595 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Hydroxyl (O-H) | 4 | 4 | 1,0 |
| Alkyl C-H | 1 | 0 | 1,0 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Matériaux possibles
| Matériel | Pics de support | Groupes chevauchants | Sources citées |
|---|---|---|---|
| water | 3595, 1018, 2945 | Hydroxyl (O-H), Alkyl C-H | 1 |
Les matériaux sont affichés uniquement lorsque le même ensemble de littérature soutient cette bande et au moins un pic caractéristique supplémentaire.
Logique du spectre
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 3595 cm⁻¹ is usually not enough for material identification by itself.
Utilisation réelle
Ce type de requête est courant dans l＇identification des polymères, le criblage des plastiques inconnus, le dépannage du contrôle qualité, la vérification des matériaux recyclés et l＇examen de l＇attribution des pics appuyée par la littérature.
Erreurs courantes
- Traiter une bande isolée comme preuve d＇un matériau sans vérifier au moins un ou deux pics de support.
- Ignorer le chevauchement : plusieurs groupes fonctionnels peuvent contribuer près du même nombre d＇onde.
- Sauter la validation lorsque des additifs, des mélanges, l＇oxydation ou la contamination peuvent déformer le spectre.
Conseil de vérification
Lorsque l＇ambiguïté persiste, validez l＇hypothèse avec DSC, GC-MS ou TGA, en particulier pour les mélanges, les échantillons dégradés et les polymères chargés.
Bibliographie derrière ces attributions
-
Hydroxyl (O-H) confiance 1,0
“confirmed two OH vibrations caused by structural OH, such Heating and acid activation are used to enhance adsorption 3595cm-1 Fe2+)(cid:2)OH as absorption bands at caused by (Al, capacity of palygorskites.”
Cai 等 - 2007 - A Fourier transform infrared spectroscopic study o DOI: 10.1016/j.saa.2006.02.053 -
Hydroxyl (O-H) confiance 1,0
“tween 3000 and 4000 The two peaks located near 3595 and cm-1 OH3650 can be attributed to O-H stretching from groups cm-1 in different environments (the 3595 peak is only observed in H 2O-rich silica glasses), but their attribution remains u”
Le Losq 等 - 2015 - Complex IR spectra of OHgroups in silicate glass DOI: 10.2138/am-2015-5076 -
Hydroxyl (O-H) confiance 1,0
“This and a new signal appeared at The D 3639(-)/3619 region includes the OH stretching vibrations of weakly high-frequency OH region showed peaks at (+) 3595(+)/3586(-) cm-1 hydrogen bonded OH groups.”
Takahashi 等 - 2007 - Water molecules coupled to the redox-active tyrosi DOI: 10.1021/bi701752d -
Hydroxyl (O-H) confiance 1,0
“Broad-band OH con2880cm-1 ing limits of 3705 to to include the broad OH tents of quartz of >1000ppm, thought to be sufficient for 3400cm-1 band at and sharp OH bands between 3595 and water weakening, are present in undeformed and deformed 3”
Kronenberg 等 - 2017 - Synchrotron FTIR imaging of OH in quartz mylonites DOI: 10.5194/se-8-1025-2017 -
confiance 0,9
“Text: 'site of the zeolite was obtained at the wavenumber 3595cm-1'”
Nugrahaningtyas 等 - 2021 - Effect of synthesis and activation methods on the DOI: 10.1515/chem-2021-0064
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