What absorbs at 2361 cm⁻¹ in an FTIR spectrum?
A band near 2361 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
快速回答
A band near 2361 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Methacrylate | 4 | 4 | 1.0 |
| Acetate | 4 | 4 | 1.0 |
| Carbon dioxide | 4 | 4 | 1.0 |
| Carboxyl (COOH) | 3 | 3 | 1.0 |
| Methoxy (OCH3) | 3 | 3 | 1.0 |
| N h | 3 | 3 | 1.0 |
| Alkyl C-H | 3 | 3 | 1.0 |
| C-O single bond | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| Hydrogen bond | 2 | 0 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| C#c | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Chitosan | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 0.7 |
| Nitrile | 1 | 1 | 0.5 |
| Hydroxyl (O-H) | 1 | 0 | 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。
可能的材料
| 材料 | 支持峰 | 重疊基團 | 引用來源 |
|---|---|---|---|
| AgNPs | 2361, 1232, 1048 | Methacrylate, Acetate | 2 |
| chitosan | 2361, 1650, 1655 | Acetate, Methacrylate | 1 |
| gold nanoparticles | 2361, 1638, 3252 | Methacrylate, Acetate | 1 |
| silver nanoparticles | 2361, 1636, 1631 | Methacrylate, Acetate | 1 |
僅當同一文獻庫支援此波段以及至少一個額外特徵峰時，才會顯示材料。
光譜邏輯
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 2361 cm⁻¹ is usually not enough for material identification by itself.
實際使用
此類查詢常見於聚合物鑑別、未知塑膠篩選、品管故障排除、再生材料驗證，以及基於文獻的峰值歸屬審查。
常見錯誤
- 將一個孤立的譜帶視為材料的證據，而未檢查至少一兩個支持峰。
- 忽略重疊：多個官能團可能在相同波數附近貢獻。
- 當添加劑、混合物、氧化或污染物可能扭曲譜圖時，跳過驗證。
驗證建議
當仍然存在歧義時，使用DSC、GC-MS或TGA驗證假設，特別是對於混合物、降解樣品和填充聚合物。
這些指派背後的文獻
-
Chitosan 信心 1.0
“A signal at 1737 on chitosan spectrum was attributed to the carboxylic (C=O) groups T 2361cm-1 overlapped by MPEO incorporation.”
Mentha piperita essential oils loaded in a chitosan nanogel with inhibitory effect on biofilm formation against S. mutans on the dental surface DOI: 10.1016/j.carbpol.2019.02.018 -
Carboxyl (COOH) 信心 1.0
“cm-1 spectra of samples calcined at 750, 850, 950 and The peaks observed near 2361 for temperatures 1050°C 2less than can be attributed to the vibration band of - CO related to the citric acid.”
Carol 等 - 2017 - Effect of Temperature on the Magnetic Properties o DOI: 10.1063/1.4990307 -
信心 1.0
“The peak at 2360.7 represents the N-H stretching vibration or C=O MANUSCRIPT stretching vibration of amine groups representing the presence of peptides as capping and stabilisation molecules in the synthesis of Ag-NPs [40].”
Kumar 等 - 2017 - Photo-induced and phytomediated synthesis of silve DOI: 10.1016/j.jphotobiol.2017.04.022 -
Phosphate (PO4) 信心 1.0
“ATD-FTIR spectra of the Salisbury's patina exhibit peaks at 2361, 2341 and 671 cm-1 (assigned to phosphates);”
Martin-Gil 等 - 2005 - The orange-brown patina of Salisbury Cathedral (We DOI: 10.1065/espr2005.05.257 -
信心 1.0
“The cm-1 peak at 2361 could be assigned to N-H stretching or C-O stretching vibrations (Ashok et al.”
Biogenic silver nanoparticles: efficient and effective antifungal agents DOI: 10.1007/s13204-015-0463-1 -
Alkyl C-H 信心 1.0
“Furthermore, the peak at 2920.32 is ascribed to C-H cm-1 which is likely to correspond to C≡C stretch of the alkyl group, the peak around 2360.95 cm-1 from alkyne and the peak at 1635.69 suggested conjugation effects of C=O stretching of ca”
Oladipo 等 - 2020 - Characterization and biomedical application of phy DOI: 10.1088/1757-899X/805/1/012021 -
Carbon dioxide 信心 1.0
“First, gas phase CO2 filled the cell, as indicated by the bands at 2361”
Thermal and Plasma-Assisted CO2 Methanation over Ru/Zeolite: A Mechanistic Study Using In-Situ Operando FTIR DOI: 10.3390/catal13030481 -
信心 1.0
“According to [4, 22], the empirical to indicates that loss parameter, R, is defined as the ratio of the height of the (002) of hydrogen and oxygen atoms due to the breaking bond 2361cm1 Bragg reflection to that of background and is a measur”
Armynah 等 - 2019 - Potentials of Biochars Derived from Bamboo Leaf Bi DOI: 10.1155/2019/3526145
有包含此波峰的圖譜嗎？
上傳您的FTIR圖譜，幾秒內即可獲得完整的解讀報告——包含帶有文獻引用的峰位指派、圖譜庫比對以及信心等級評估的證據鏈。