What absorbs at 2245 cm⁻¹ in an FTIR spectrum?
A band near 2245 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 4 cited sources
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Secondary amine | 2 | 2 | 1,0 |
| Nitrile | 2 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Silicon hydride | 1 | 1 | 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.
Bibliographie derrière ces attributions
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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 -
Amide confiance 1,0
“R-NH 2, CO, CO 2 2307 C-N (stretching) and NCO (asymmetric stretching) R-CN, R-NCO 2245”
Hejna 等 - 2017 - Performance properties of rigid polyurethane-polyi DOI: 10.1515/epoly-2017-0012 -
Nitrile confiance 1,0
“at 3286.70/cm (OH and NH stretching), 2245.14/cm (CN nitrile stretching), 1660.71/cm (C=O tertiary amide),”
Kausar 等 - 2021 - Formulation, In Vitro Evaluation, and Toxicity Stu DOI: 10.1155/2021/6634780 -
confiance 0,9
“Stretching vibrations from AN at 2245 cm-1.”
Advanced hybrid membranes for efficient nickel retention from simulated wastewater DOI: 10.1002/pi.6183
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