What absorbs at 1619 cm⁻¹ in an FTIR spectrum?
A band near 1619 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 |
|---|---|---|---|
| C=n | 1 | 1 | 1.0 |
| Amine primary | 1 | 1 | 0.9 |
| Hydroxyl (O-H) | 1 | 1 | 0.9 |
| Carboxyl (COOH) | 1 | 1 | 0.9 |
| Carbonyl (C=O) | 1 | 1 | 0.9 |
| Protein beta sheet | 1 | 1 | 0.9 |
| Amide | 1 | 1 | 0.8 |
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
-
C=n 信心 1.0
“Assigned to νC=N functional group in the ring.”
Farooq 等 - 2018 - SYNTHESIS, STRUCTURAL AND PHOTO-PHYSICAL STUDIES O DOI: 10.4314/bcse.v32i3.7 -
信心 0.9
“Explicit assignment: acylamino group peak.”
Cao 和 Wang - 2018 - Highly conductive and flexible silk fabric via ele DOI: 10.1016/j.orgel.2017.12.016 -
Protein beta sheet 信心 0.9
“Explicit assignment: 'another peak at 1619 was β-structure (β-sheets)'.”
Thakur 等 - 2017 - Characteristics of normal and waxy corn physicoch DOI: 10.1007/s13197-017-2775-5) -
Carbonyl (C=O) 信心 0.9
“Explicit assignment: 'C-- 1 1 1 1619 [39] of carbonyl groups'”
Hossain 和 Roy - 2023 - Monitoring the curing efficiency of a plant-based DOI: 10.1016/j.heliyon.2023.e16273 -
Carboxyl (COOH) 信心 0.9
“Explicit: 'peak at 1619 corresponds to carboxylate C=O stretching vibrations'”
Kanth 等 - 2017 - Blend Hydrogel Microspheres of Carboxymethyl Chito DOI: 10.3390/pharmaceutics9020013 -
信心 0.9
“Explicit assignment to thyme.”
Macchia 等 - 2022 - In-Situ Comparative Study of Eucalyptus, Basil, Cl DOI: 10.3390/mps5030037 -
Hydroxyl (O-H) 信心 0.9
“Band at 1619 cm-1 associated with Brønsted Si(OH)Al groups.”
Miletto 等 - 2018 - Hierarchical SAPO-34 Architectures with Tailored A DOI: 10.1002/open.201800001 -
Amine primary 信心 0.9
“Text: '1619 was due to N-H bend of primary amines'”
Patil 等 - 2017 - Instant green synthesis of silver-based herbo-meta DOI: 10.1007/s13205-016-0589-1)
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