What absorbs at 1545 cm⁻¹ in an FTIR spectrum?
A band near 1545 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
Възможни определяния на функционални групи
| Функционална група | Подкрепящи факти | Цитирани източници | Най-висока достоверност |
|---|---|---|---|
| Amide | 12 | 10 | 1,0 |
| C n single bond | 5 | 5 | 1,0 |
| N h | 4 | 4 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Urea | 1 | 1 | 0,8 |
| Protein | 1 | 1 | 0,8 |
| Carbonate | 1 | 1 | 0,8 |
| Carbonyl (C=O) | 1 | 1 | 0,6 |
| Bronsted acid site | 1 | 0 | 0,95 |
Класирането отразява натрупаните литературни доказателства, а не единично авторитетно правило. Винаги потвърждавайте спрямо контекста на вашата проба.
Литература зад тези определяния
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Amide достоверност 1,0
“Explicit assignment in text: 'proporción del área en 1545 (amida II)'.”
Tarantilis 等 - 2012 - Monitoring of royal jelly protein degradation duri DOI: 10.3896/IBRA.1.51.2.07 -
Amide достоверност 1,0
“Text: 'peak at 1545 cm-1 (N-H bend, C-N stretch) is ascribed to amide II'”
Govari 等 - 2021 - Quest of Intelligent Research Tools for Rapid Eval DOI: 10.3390/foods10020264 -
Carboxyl (COOH) достоверност 1,0
“Part of double-splitting of carboxylate band”
Lopresti 等 - 2023 - The Crystal Structure of Calcium Sebacate by X-ray DOI: 10.3390/cryst13020261 -
достоверност 0,95
“Text: 'and -N-H bending in secondary amines'”
Jadhav 等 - 2017 - Thermoresponsive copolymer-grafted SBA-15 porous s DOI: 10.3144/expresspolymlett.2017.11 -
достоверност 0,95
“Band at 1545 cm-1 attributed to pyridine coordinated to Lewis acidic sites (Lpy).”
Martins 等 - 2020 - Synergistic Action of Montmorillonite with an Intu DOI: 10.3390/polym12122781 -
Amide достоверност 0,9
“Explicit assignment: 'Amide II bands at 1545 cm-1'”
Mackanos 等 - 2009 - Use of an endoscope-compatible probe to detect col DOI: 10.1117/1.3174387(cid:4) -
достоверност 0,9
“Explicitly assigned to lipid ester stretch.”
Pietrzak 和 Miller - 2005 - Microchemical structure of soybean seeds revealed DOI: 10.1021/jf050608x -
Amide достоверност 0,9
“Text: 'weak amide II band near 1545 cm-1'.”
Xu 等 - 2005 - Distinguishing malignant from normal stomach tissu DOI: 10.1360/04yb0135
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