What absorbs at 1742 cm⁻¹ in an FTIR spectrum?
A band near 1742 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) | 6 | 6 | 0.9 |
| Ester | 2 | 2 | 0.95 |
| Carboxyl (COOH) | 1 | 1 | 0.9 |
| Carbohydrate | 1 | 1 | 0.8 |
| Lipid | 1 | 1 | 0.5 |
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
-
信心 1.0
“Explicit assignment: 'C=O vibrational mode of PMMA, we recorded an s-SNOM ω=1742cm-1'”
Mester 等 - 2020 - Subsurface chemical nanoidentification by nano-FTI DOI: 10.1038/s41467-020-17034-6 -
Ester 信心 0.95
“Sharp peak proving presence of ester groups.”
Azadeh 等 - 2022 - Development of Water Repellent, Non-Friable Tannin DOI: 10.3390/polym14225025 -
信心 0.9
“Explicitly assigned.”
Barbosa 等 - 2022 - Production, Physicochemical and Structural Charact DOI: 10.3390/fermentation8110618 -
Carbonyl (C=O) 信心 0.9
“C=O bond stretches”
Ferreira da Silva Neto 等 - 2021 - DOI: 10.18273/revion.v34n2-2021009 -
Carbonyl (C=O) 信心 0.9
“Text: 'band centered at 1742 ν(C=O)'”
Hackett 等 - 2012 - FTIR Imaging of Brain Tissue Reveals Crystalline C DOI: 10.1021/cn300093g -
Carbonyl (C=O) 信心 0.9
“Peak at 1741.60 cm-1 assigned to C=O.”
Kartikaningsih 等 - 2017 - FUCOXANTHIN FROM BROWN SEAWEED Sargassum cristaefo DOI: 10.1063/1.4983436 -
Carbonyl (C=O) 信心 0.9
“Explicit assignment in text.”
Koohestani 等 - 2021 - Composite of bentonite and cyclodextrin as an effi DOI: 10.1038/s41598-021-84349-9 -
Carboxyl (COOH) 信心 0.9
“Explicit: -COOH stretching vibration presented at 1742.37 cm-1.”
Xuan 等 - 2017 - Effects of Preservative Pretreatments on Moisture DOI: 10.15376/biores.12.4.7986-8000
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