What absorbs at 3469 cm⁻¹ in an FTIR spectrum?
A band near 3469 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 3 cited sources
Penetapan kumpulan berfungsi yang mungkin
| Kumpulan berfungsi | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
Pemeringkatan mencerminkan bukti literatur terkumpul, bukan satu peraturan berwibawa. Sentiasa sahkan terhadap konteks sampel anda.
Literatur di sebalik penetapan ini
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keyakinan 1.0
“5B that three cm-1, cm-1 cm-1 3369 and 3242 in the spectra of amine stretching vibrations were observed at 3469 uncured prepregs.”
Aerospace composite cured by quickstep and autoclave processing techniques: Evaluation and comparison of reaction progress DOI: 10.1016/j.ast.2017.02.014. -
Hydroxyl (O-H) keyakinan 1.0
“LLM confirmed rule peak-group candidate”
Polybenzoxazine Resins with Cellulose Phosphide: Preparation, Flame Retardancy and Mechanisms DOI: 10.3390/polym13244288 -
C c single bond keyakinan 1.0
“1643 1281 1146 (1) 1039 2922 2985 Transmittance, cm-1 the case of ETMS (curve 1) the 1046 band was 3469 578 attributed to the C-C-O vibrations of C 2H 5OH [47].”
Rangelova 等 - 2011 - MethylcelluloseSiO2 hybrids sol-gel preparation DOI: 10.2478/s11532-010-0123-y
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