What absorbs at 1641 cm⁻¹ in an FTIR spectrum?
A band near 1641 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 |
|---|---|---|---|
| Amide | 5 | 4 | 0.95 |
| Hydroxyl (O-H) | 3 | 3 | 1.0 |
| Alkene (C=C) | 3 | 3 | 0.9 |
| Carbonyl (C=O) | 3 | 3 | 0.9 |
| Water (H2O) | 2 | 2 | 0.9 |
| N h | 2 | 2 | 0.9 |
| Phenolic | 1 | 1 | 0.8 |
| Protein random coil | 1 | 0 | 0.6 |
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
“Text: 'ascribed to the stretching and bending associated with the physisorption of water molecules or surface hydroxyls'.”
Wu 等 - 2023 - Efficient and Stable O-Methylation of Catechol wit DOI: 10.3390/catal13010150 -
Amide 信心 0.95
“Explicit: 'protein amide I band at 1641'.”
Qiu 等 - 2020 - Analyses of the Fourier Transform Infrared Spectra DOI: 10.1134/S0030400X2008041X -
Hydroxyl (O-H) 信心 0.9
“Explicit assignment in text.”
Bushra 等 - 2013 - Microwave assisted acetylation of mung bean starch DOI: 10.1002/star.201200081 -
Amide 信心 0.9
“Explicit assignment: amide I band at 1641 cm-1”
Dhasmana 等 - 2019 - Silk fibroin protein modified acellular dermal mat DOI: 10.1016/j.msec.2018.12.038 -
Carbonyl (C=O) 信心 0.9
“Stretching vibration C=O”
Eddya 等 - 2020 - A comparison of chitosan properties after extracti DOI: 10.1016/j.heliyon.2020.e03486 -
Amide 信心 0.9
“Explicit assignment: '1641 is assigned to Amide I'”
JOONSUK - 2019 - ATR-FTIR Analysis of Adhesives Jointing Buddhist S DOI: 10.12654/JCS.2019.35.1.02 -
Alkene (C=C) 信心 0.9
“alkene stretching vibration”
Razgon 等 - 2008 - Ozonolysis-based route to the in situ formation of DOI: 10.1021/la703120c -
信心 0.9
“Explicit assignment: 'carboxyl amide I group'.”
Thanh 等 - 2020 - Characterization of hyaluronic acid extracted from DOI: 10.1016/j.ijbiomac.2020.04.137
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