What absorbs at 1697 cm⁻¹ in an FTIR spectrum?
A band near 1697 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
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Carbonyl (C=O) | 3 | 3 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 1.0 |
| C=n | 1 | 1 | 1.0 |
| Protein beta sheet | 1 | 1 | 0.9 |
| Amide | 1 | 1 | 0.9 |
| Hydrogen bond | 1 | 1 | 0.8 |
| Alkyl C-H | 1 | 0 | 0.8 |
排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。
這些指派背後的文獻
-
C=n 信心 1.0
“Explicit assignment in text”
Gouda 等 - 2022 - Fabrication of Chitosan Nanofibers Containing Some DOI: 10.3390/polym14102094 -
Carboxyl (COOH) 信心 1.0
“Explicit assignment in text.”
Malik 等 - 2017 - Cross-linked beta-cyclodextrin and carboxymethyl c DOI: 10.1371/journal.pone.0172727 -
Carbonyl (C=O) 信心 0.9
“Assigned to carbonyl mode of P700+”
Breton 等 - 1999 - FTIR study of the primary electron donor of photos DOI: 10.1021/bi991216k -
Carbonyl (C=O) 信心 0.9
“Explicit assignment in text: 'the peak at 1697 stretching vibration of the carbonyl group C=O'”
Aisha 等 - 2013 - Syzygium campanulatum korth methanolic extract inh DOI: 10.1186/1472-6882-13-168 -
信心 0.9
“Explicit assignment: '1697 (C = C isolated)'”
Murei 等 - 2020 - Functionalization and antimicrobial evaluation of DOI: 10.1038/s41598-020-68290-x -
Carbonyl (C=O) 信心 0.9
“Characteristic of C=O stretching with stronger H-bonding.”
Nicolaides 等 - 2016 - ns-mu s Time-Resolved Step-Scan FTIR of ba(3) Oxid DOI: 10.3390/ijms17101657 -
Amide 信心 0.9
“Text: 'Amide-I ... bands at 1697'”
Suhail 等 - 2021 - Preparation and In Vitro Evaluation of AsparticAl DOI: 10.3390/gels7020068 -
Protein beta sheet 信心 0.9
“Attributed to β-sheet conformation.”
Tamburro 等 - 2005 - Supramolecular amyloid-like assembly of the polype DOI: 10.1074/jbc.M411617200
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