What absorbs at 882 cm⁻¹ in an FTIR spectrum?
A band near 882 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 882 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 |
|---|---|---|---|
| C c single bond | 3 | 3 | 1,0 |
| Hydroxyl (O-H) | 3 | 3 | 1,0 |
| Phosphate (PO4) | 2 | 2 | 1,0 |
| Metal hydroxyl | 2 | 2 | 1,0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Phosphorus | 1 | 1 | 1,0 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Silicon hydride | 1 | 1 | 1,0 |
| Metal oxygen | 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 |
|---|---|---|---|
| silica | 882, 1100, 1080 | Hydroxyl (O-H) | 1 |
| CuO | 882, 453, 1000 | Hydroxyl (O-H) | 1 |
| DNA | 882, 1712, 1660 | Phosphate (PO4) | 1 |
| kaolinite | 882, 3696, 693 | Hydroxyl (O-H), Phosphate (PO4), Metal hydroxyl | 1 |
| quartz | 882, 800, 3053 | Hydroxyl (O-H), Metal hydroxyl | 1 |
| bentonite | 882, 918, 525 | Hydroxyl (O-H), Metal hydroxyl | 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 882 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
-
C c single bond confiance 1,0
“LLM confirmed rule peak-group candidate”
De 等 - 2000 - Hydrolysis-condensation reactions of TEOS in the p DOI: 10.1039/B003221M -
Silicon hydride confiance 1,0
“the band of 1108 corresponding to Sicm-1 O-Si (asymmetric stretching of interstitial oxygen in Si) and absorption peaks at 882 and 2245 cm-1 corresponding to O 3-SiH bending and stretching mode [4, 6, 12, 18, 19, 32].”
REVERSIBLE QUENCHING OF PHOTOLUMINESCENCE IN STAIN ETCHED POROUS SILICON AT HNO3 POSTTREATMENT AND ROLE OF OXYGEN BONDS DOI: 10.1016/j.jlumin.2017.11.011 -
Metal hydroxyl confiance 1,0
“Sagadevan [84] connected the Cu-OH vibration to the 882 cm-1 peak, which proved the cm-1 connected the Cu-OH vibration to the 882 peak, which proved the successful prepasuccessful preparation of rGO/CuO nanocomposites in agreement with [85-”
Effect of rGO wt.% on the Preparation of rGO/CuO Nanocomposites at Different Test Periods and Temperatures DOI: 10.3390/cryst12101325 -
C c single bond confiance 1,0
“(%) cm-1 The peaks at 882 and 1015 were due to the asymTransmittance metric tensile vibrations of C-C and C-O-C bands of”
Optimization of food-grade medium for co-production of bioactive substances by Lactobacillus acidophilus LA-5 for explaining pharmabiotic mechanisms of probiotic DOI: 10.1007/s13197-020-04894-5 -
Silicon (Si) confiance 1,0
“The 1038 cm-1is assigned to stretching vibrations of Si-O, and bands at 918 cm-1 and 882 cm-1 cm-1”
Khodosova 等 - 2022 - Magnetic Nanosorbents Based on Bentonite and CoFe2 DOI: 10.3390/min12111474 -
Phosphate (PO4) confiance 1,0
“2cm-1 asymmetric and symmetric vibration at 1237 to 1236 and 1098 to Minor variation in PO cm-1, cm-1 cm-1 1094 infrared B-marker bands at 882 (sugar-phosphate stretch) and 817 (phospho-diester”
Astragalin from Cassia alata Induces DNA Adducts in Vitro and Repairable DNA Damage in the Yeast Saccharomyces cerevisiae DOI: 10.3390/ijms13032846 -
Alkyl C-H confiance 1,0
“and, 882 cm-1 and 860 cm-1 represent CH rocking and C-C stretching, 2”
Verma 等 - 2021 - Chelating Ligands as Electrolyte Solvent for Recha DOI: 10.1021/acs.chemmater.0c04358 -
Phosphate (PO4) confiance 1,0
“cm-1 cm-1 cm-1 The peaks at 385 and 420 are related lower Raman peaks at 882 and 1150 correspond to HPO”
Fabrication and Characterisation of Two-Layered Synthetic Titanium-Chitosan Bone Scaffolds DOI: 10.1007/978-3-030-92381-5_73
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