What absorbs at 1473 cm⁻¹ in an FTIR spectrum?
A band near 1473 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
Réponse rapide
A band near 1473 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 |
|---|---|---|---|
| Alkene (C=C) | 4 | 3 | 1,0 |
| Amide | 3 | 3 | 1,0 |
| Alkyl C-H | 2 | 2 | 1,0 |
| Secondary amine | 2 | 2 | 1,0 |
| C n single bond | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Carbonate | 1 | 1 | 0,9 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
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 1473 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
-
confiance 1,0
“1473cm-1 represents vibrations of the oxygen octahedra with 1623cm-1 Transmittance(arb.”
Ghosh 等 - 2013 - Vibrational Modes And Electronic Structure Of Sr2G DOI: 10.1063/1.4791287 -
Alkyl C-H confiance 1,0
“sym(C-H) 3-N+.26 chain25 and of CH methylene (cid:238) In the surfactant mixture (Figure 2a, dashed line), the cm-1 are attributed to peaks (doublet) at 1473 and 1465 2scissoringmodeandaccountforaparallelpacking theCH of the trans methylene”
Nikoobakht 和 El-Sayed - 2001 - Evidence for bilayer assembly of cationic surfacta DOI: 10.1021/la010530o -
Amide confiance 1,0
“obtainedat1462cm(cid:1)1[Fig.3(b)]andatthesecondofthestrong wavenumber of the Amide II band and which has been loosely Access cm(cid:1)1 b-sheets.5 paraffin signicant attributed to peaks, 1473 [Fig.”
Al Jedani 等 - 2020 - A de-waxing methodology for scanning probe microsc DOI: 10.1039/d0ay00965b -
confiance 1,0
“cm1 cm1 (alone) appeared at 3358 (stretching of N-H bond), 3087 and 3094 (stretching of C-H and O-H cm1 bonds), 1772 and 1662 (stretching of C = C, C = O and C = N bonds and bending of N-H bond) and cm1 1473 and 1364 (stretching and bending”
Ali 等 - 2023 - Nitazoxanide and azithromycin for the early treatm DOI: 10.21203/rs.3.rs-1745239/v1 -
Alkene (C=C) confiance 1,0
“The two medium bands at 1539 cm-1 were assigned to the pyridine skeletal stretching -2.7 formation of the desired product are the broad signal to ppm associated with the NH and two medium bands at 1539 cm-1 and 1473 cm-1 correspond to C=C a”
Synthesis of a New Co Metal–Organic Framework Assembled from 5,10,15,20-Tetrakis((pyridin-4-yl) phenyl)porphyrin “Co-MTPhPyP” and Its Application to the Removal of Heavy Metal Ions DOI: 10.3390/molecules28041816 -
Amide confiance 1,0
“C=O pyranose ring (2892 stretching, NH-Ac (1644 and C-N stretching (1473 HA showed cm-1);”
Dual-responsive (pH/temperature) Pluronic F-127 hydrogel drug delivery system for textile-based transdermal therapy DOI: 10.1038/s41598-019-48254-6 -
Phosphate (PO4) confiance 1,0
“(cm-1 PZ-HEMA-1 : 6 ) were 2947 (CH2), 1720 (C=O), 1635 istic IR bands PZ-HEMA-LA (C=C), 1473 (CO-O), 1033 (P-O-C), 1168 (phosphazene 31 1 (𝛿 P-NMR peaks: 1.5 = ppm);”
Martinez Ceballos 等 - 2013 - Synthesis and Characterization of Polyphosphazenes DOI: 10.1155/2013/645869 -
Alkyl C-H confiance 1,0
“- 1 overlap with the spectrum of paraffin wax, as highlighted by the presence of bands at 2915 and 2848 cm (CH - 1 - 1 - 1 stretching), 1473 cm (CH bending), 1380 cm (CH bending), 728 and 719 cm (CH rocking) [24-26].”
Pianorsi 等 - 2017 - Organogels for the cleaning of artifacts DOI: 10.1515/pac-2016-0908
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