What absorbs at 3421 cm⁻¹ in an FTIR spectrum?
A band near 3421 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 |
|---|---|---|---|
| Hydroxyl (O-H) | 11 | 11 | 1.0 |
| N h | 4 | 3 | 1.0 |
| Amine primary | 1 | 1 | 0.9 |
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
-
Hydroxyl (O-H) 信心 1.0
“assigned to O-H stretching”
Rukman 等 - 2019 - GO-Fe3O4 Nanocomposite from coconut shell Synthes DOI: 10.1088/1755-1315/217/1/012008 -
Hydroxyl (O-H) 信心 0.95
“Explicit assignment: 'broad absorption band at 3421 cm-1 corresponded to the stretching of hydroxyl'”
Ma 等 - 2022 - Thermal and Rheological Performances Evaluation of DOI: 10.3390/molecules27227776 -
Hydroxyl (O-H) 信心 0.9
“Text states 'peak at 3421 shows -OH from hydroxyl'”
Arizka 等 - 2019 - Synthesis and Physical Properties Characterization DOI: 10.1088/1757-899X/546/4/042004 -
N h 信心 0.9
“Explicit assignment in text”
Avilala 和 Golla - 2019 - ANTIBACTERIAL AND ANTIVIRAL PROPERTIES OF SILVER N DOI: 10.13040/IJPSR.0975-8232.10(3).1223-28 -
Hydroxyl (O-H) 信心 0.9
“Text states 'strong 3421 peaks ... relates to the O-H region'.”
Daniel 等 - 2020 - Citric acid modified cellulose a cost effective a DOI: 10.1080/15567036.2020.1773963 -
Hydroxyl (O-H) 信心 0.9
“Text: 'band at 3421.10 was attributed to O-H (the intra-molecular H-bonded)'”
Fauzia 等 - 2018 - Study of Equilibrium, Kinetic and Thermodynamic fo DOI: 10.1063/1.5064078 -
N h 信心 0.9
“Explicit assignment: 'broad peak at 3420.87 cm-1 representing -NH- and hydroxyl (-OH) extensions'”
Afreen 等 - 2017 - A novel multicopper oxidase (laccase) from cyanoba DOI: 10.1371/journal. -
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
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