What absorbs at 967 cm⁻¹ in an FTIR spectrum?

Réponse rapide

A band near 967 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

Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.

Matériaux possibles

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 967 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

• Silicon (Si) confiance 1,0

  “Materials Science in Semiconductor Processing 67 (2017) 46-54 967cm-1 seen at for the sample nitrided for 30min can be attributed to t = 30 min TO amorphous Si [37,39].”

  Growth of silicon nitride by nitridation of amorphous silicon at low temperature in hot-wire CVD DOI: 10.1016/j.mssp.2017.05.015
• Nucleic acid confiance 1,0

  “950cm(cid:3)1 are dehydrated, the DNA bands at 967 and are absent a-helical b-sheet In addition, the positions of and bands are”

  Rapid approach to analyze biochemical variation in rat organs by ATR FTIR spectroscopy DOI: 10.1016/j.saa.2013.09.131
• Silicon (Si) confiance 1,0

  “The absorption peak at 967 4 Figure 4 demonstrates the FTIR spectra of PFSS, CR, and CR-loaded PFSS at different associated with Si-O-Fe, proves the formation of a high polymeric substance of PFSS, dosage loadings and pH values.”

  Degradation of Diazo Congo Red Dye by Using Synthesized Poly-Ferric-Silicate-Sulphate through Co-Polymerization Process DOI: 10.3390/polym15010237
• Phosphate (PO4) confiance 1,0

  “COH stretch 1467 1090 C-H bend PO2 stretch 1092 PO2 stretch 967 Choline stretch 1172”

  Prediction of Neonatal Respiratory Distress Biomarker Concentration by Application of Machine Learning to Mid-Infrared Spectra DOI: 10.3390/s22051744
• C c single bond confiance 1,0

  “cm-1 (C-N in-plane deformation), 1201 (Py ring vibration), 1097 (asymmetric S(=O) 2 cm-1 stretching vibration), 1049 (symmetric S(=O) stretching and Py ring C-H deformation 2 cm-1 cm-1 vibration), 967 (C-C out of plane ring deformation vibr”

  New conductive copolymer membranes via track-etched PC templates for biological media ultra-filtration DOI: 10.1016/j.nimb.2007.08.066
• Alkene (C=C) confiance 1,0

  “the increase in trans double bonds during cm-1 thermal oxidation can be observed by the increasing peak intensities at 967 [48].”

  Chitosan-Based Anti-Oxidation Delivery Nano-Platform: Applications in the Encapsulation of DHA-Enriched Fish Oil DOI: 10.3390/md19080470
• Nucleic acid confiance 1,0

  “LLM confirmed rule peak-group candidate”

  Di Giambattista 等 - 2010 - UVB radiation induced effects on cells studied by DOI: 10.1007/s00249-009-0446-9
• confiance 1,0

  “Additionally, the Si-O band of XLG at cm-1 967 [71] was found in all NC hydrogel spectra but modified because of the interaction with PNVP (Figure 4a,b).”

  Poly(N-vinylpyrrolidone)–Laponite XLG Nanocomposite Hydrogels: Characterization, Properties and Comparison with Divinyl Monomer-Crosslinked Hydrogels DOI: 10.3390/polym14194216