What absorbs at 1731 cm⁻¹ in an FTIR spectrum?
A band near 1731 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 8 cited sources
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Carbonyl (C=O) | 12 | 12 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 0,9 |
| Ester | 1 | 1 | 0,95 |
| C-O single bond | 1 | 1 | 0,9 |
| Carbohydrate | 1 | 1 | 0,8 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Bibliographie derrière ces attributions
-
Carbonyl (C=O) confiance 1,0
“Initiator Dicumyl Peroxide which are characterized by the appearance of wave 100 phr (33 g) cyclic natural rubber (CNR) is cm-1 number absorption peaks in the area of 1731 weighed, then CNR is slowly inserted into the internal (absorption o”
Aritonang 等 - 2019 - Grafting of Oleic Acid On Cyclic Natural Rubber Re DOI: 10.13005/ojc/350119 -
Ester confiance 0,95
“Explicit assignment: peak at 1731 cm-1 indicates ester group.”
Ibrahim 等 - 2016 - Thermal and mechanical properties of gamma-irradia DOI: 10.1080/10420150.2016.1270945 -
confiance 0,9
“Explicit assignment in text.”
Chandran 等 - 2015 - Crystal growth, spectral, optical, laser damage, p DOI: 10.1016/j.saa.2015.06.113 -
Carbonyl (C=O) confiance 0,9
“Explicit assignment: 'carbonyl stretch at 1731 cm-1'”
Kapon 等 - 2017 - Vibrational Strong Light-Matter Coupling Using a W DOI: 10.1021/acs.jpcc.7b06999 -
Carbonyl (C=O) confiance 0,9
“Text: 'peak at 1731 presence of AOT dopant'”
Mustapa 等 - 2018 - Fabrication of Polyaniline Based Chemical Sensor f DOI: 10.21315/jps2018.29.s1.2 -
Carbonyl (C=O) confiance 0,9
“Assigned to carbonyl stretching”
Azrak 等 - 2021 - Controlled Dispersion and Setting of Cellulose Nan DOI: 10.21203/rs.3.rs-376512/v1 -
Carbonyl (C=O) confiance 0,9
“Ester link”
Azzem 和 Bellel - 2022 - Thermal and Physico-Chemical Characteristics of Pl DOI: 10.3390/buildings12081119 -
Carbonyl (C=O) confiance 0,9
“C=O stretching vibration at 1731 cm-1, indicates carbonyl groups in xylan”
Gonultas 和 Candan - 2018 - CHEMICAL CHARACTERIZATION AND FTIR SPECTROSCOPY OF DOI: 10.4067/S0718-221X2018005031301
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