What absorbs at 3445 cm⁻¹ in an FTIR spectrum?
A band near 3445 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 |
|---|---|---|---|
| N h | 4 | 4 | 0.9 |
| Hydroxyl (O-H) | 3 | 3 | 1.0 |
| Silanol (Si-OH) | 2 | 2 | 1.0 |
| Amine primary | 2 | 2 | 0.9 |
| Water (H2O) | 1 | 1 | 1.0 |
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
-
Silanol (Si-OH) 信心 1.0
“Text: 'silanol groups and also adsorbed water appeared at 3445 cm-1'”
Babu 等 - 2017 - Removal of Lead from Water Using Calcium Alginate DOI: 10.1155/2017/4650594 -
Hydroxyl (O-H) 信心 1.0
“Explicit assignment in text.”
Catauro 和 Pacifico - 2017 - Synthesis of Bioactive Chlorogenic Acid-Silica Hyb DOI: 10.3390/ma10070840 -
信心 0.95
“Text: 'Peaks at 3445, 3441, 3319, and 3318 are attributed to ... stretching from NIPAM units'”
Jadhav 等 - 2017 - Thermoresponsive copolymer-grafted SBA-15 porous s DOI: 10.3144/expresspolymlett.2017.11 -
Hydroxyl (O-H) 信心 0.9
“Text states 'O-H absorption bands at 3445'.”
Khanra 等 - 2014 - 7,7,8,8-Tetracyanoquinodimethane-assisted one-step DOI: 10.1039/c3nr05307e -
Amine primary 信心 0.9
“Band for primary amines.”
Ashraf 等 - 2018 - Synthesis of polyimides from alpha,alpha '-bis(3-a DOI: 10.1016/j.molstruc.2018.01.098 -
N h 信心 0.9
“Explicit assignment in text”
Farag 和 Mohamed - 2013 - Synthesis and Characterization of Carboxymethyl Ch DOI: 10.3390/molecules18010190 -
Hydroxyl (O-H) 信心 0.9
“Characteristic peak at 3445 cm-1 assigned to -OH group.”
Islam 等 - 2023 - Psidium guajava leaf extract mediated green synthe DOI: 10.1039/d3ra03381c -
Silanol (Si-OH) 信心 0.9
“Explicit assignment in text.”
Moeini 等 - 2022 - A Novel Pd-P Nano-Alloy Supported on Functionalize DOI: 10.3390/catal12010020
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