What absorbs at 1655 cm⁻¹ in an FTIR spectrum?
A band near 1655 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
Möjliga identifieringar av funktionella grupper
| Funktionell grupp | Stödjande fakta | Citerade källor | Högsta förtroende |
|---|---|---|---|
| Amide | 30 | 28 | 1,0 |
| Carbonyl (C=O) | 9 | 9 | 1,0 |
| Protein alpha helix | 5 | 3 | 0,9 |
| N h | 4 | 4 | 0,9 |
| Alkene (C=C) | 3 | 3 | 1,0 |
| C n single bond | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 0,9 |
| Protein random coil | 1 | 1 | 0,9 |
| Ketone | 1 | 1 | 0,9 |
| C-O single bond | 1 | 1 | 0,9 |
| Nucleic acid | 1 | 1 | 0,8 |
| Carbohydrate | 1 | 1 | 0,8 |
| Hydrogen bond | 1 | 1 | 0,8 |
| Hydroxyl (O-H) | 1 | 1 | 0,8 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
Litteratur bakom dessa identifieringar
-
Amide förtroende 1,0
“Explicit assignment: 'amide I 1655 cm-1'.”
Park 等 - 2000 - Vibrational Stark spectroscopy of NO bound to heme DOI: 10.1021/ja0014741 -
Carbonyl (C=O) förtroende 1,0
“Carbonyl group vibration band.”
Abdi 等 - 2022 - Improvement of anti-corrosion performance of an ep DOI: 10.1038/s41598-022-14854-y -
Amide förtroende 1,0
“Explicit assignment: 'FTIR absorbance peak at 1655 cm-1 for amide-I'”
Anusha 等 - 2016 - Mechanochemical synthesis of chitosan submicron pa DOI: 10.1016/j.jare.2016.08.006 -
C n single bond förtroende 1,0
“Assigned to (O)C-N(H) in amide”
Culica 等 - 2019 - Recyclable Polymer-Supported N-Hydroxyphthalimide DOI: 10.3390/ma12213585 -
Amide förtroende 1,0
“Text: 'amide I (C=O stretch)'”
Lahlali 等 - 2017 - Evaluating Changes in Cell-Wall Components Associa DOI: 10.3390/ijms18102058 -
Alkene (C=C) förtroende 1,0
“Disappearance of C=C band.”
Pourchet 等 - 2019 - New Reactive Isoeugenol Based Phosphate Flame Reta DOI: 10.1021/acssuschemeng.9b02629 -
Amide förtroende 0,9
“Explicitly assigned as amide I.”
Baba 等 - 2021 - Conjoint application of ultrasonication and redox DOI: 10.1016/j.ultsonch.2021.105784 -
Protein alpha helix förtroende 0,9
“Explicit assignment: 'α-helix (ca. 1,655 cm-1)'”
Damiran 和 Yu - 2011 - Molecular basis of structural makeup of hulless ba DOI: 10.3168/jds.2011-4564
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