What absorbs at 967 cm⁻¹ in an FTIR spectrum?
A band near 967 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
Risposta rapida
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.
Possibili assegnazioni di gruppi funzionali
| Gruppo funzionale | Fatti di supporto | Fonti citate | Affidabilità massima |
|---|---|---|---|
| Silicon (Si) | 4 | 4 | 1,0 |
| Alkene (C=C) | 4 | 3 | 1,0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| S eq o | 2 | 2 | 1,0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1,0 |
| Methacrylate | 2 | 2 | 1,0 |
| Ketone | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Amide | 2 | 2 | 1,0 |
| Acetate | 2 | 2 | 1,0 |
| Nucleic acid | 2 | 2 | 1,0 |
| Alkyl C-H | 2 | 1 | 1,0 |
| Silanol (Si-OH) | 1 | 1 | 1,0 |
| C-S single bond | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Chitosan | 1 | 1 | 1,0 |
| Aldehyde (CHO) | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| C n single bond | 1 | 1 | 1,0 |
| Fatty acid | 1 | 0 | 1,0 |
La classifica riflette le prove bibliografiche accumulate, non una singola regola autorevole. Conferma sempre nel contesto del tuo campione.
Materiali possibili
| Materiale | Picchi di supporto | Gruppi sovrapposti | Fonti citate |
|---|---|---|---|
| Chitosan-Based | 967, 2924, 1743 | Hydroxyl (O-H) | 1 |
| lipids | 967, 1735, 810 | Hydroxyl (O-H) | 1 |
| Chitosan | 967, 1650, 1655 | Hydroxyl (O-H) | 1 |
I materiali vengono mostrati solo quando lo stesso pool di letteratura supporta questa banda e almeno un picco caratteristico aggiuntivo.
Logica dello spettro
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.
Utilizzo nel mondo reale
Questo tipo di richiesta è comune nell＇identificazione dei polimeri, nello screening di plastiche sconosciute, nella risoluzione dei problemi di controllo qualità, nella verifica dei materiali riciclati e nella revisione dell＇assegnazione dei picchi supportata dalla letteratura.
Errori comuni
- Trattare una banda isolata come prova di un materiale senza verificare almeno uno o due picchi di supporto.
- Ignorando la sovrapposizione: più gruppi funzionali possono contribuire vicino allo stesso numero d＇onda.
- Saltare la convalida quando additivi, miscele, ossidazione o contaminazione possono distorcere lo spettro.
Consiglio di verifica
Quando permangono ambiguità, convalida l＇ipotesi con DSC, GC-MS o TGA, specialmente per miscele, campioni degradati e polimeri caricati.
Letteratura dietro queste assegnazioni
-
Silicon (Si) affidabilità 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 affidabilità 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) affidabilità 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) affidabilità 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 affidabilità 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) affidabilità 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 affidabilità 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 -
affidabilità 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
Hai uno spettro con questa banda?
Carica il tuo spettro FTIR e ottieni un report di interpretazione completo — assegnazioni di picchi con citazioni bibliografiche, corrispondenze con librerie e una catena di prove con valutazione di affidabilità — in secondi.