What absorbs at 1556 cm⁻¹ in an FTIR spectrum?
A band near 1556 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Amide | 3 | 2 | 0.9 |
| Alkene (C=C) | 2 | 1 | 0.9 |
| N h | 1 | 1 | 0.9 |
| Metal oxygen | 1 | 1 | 0.9 |
| Nitrogen heterocycle | 1 | 1 | 0.9 |
| Aromatic ring | 1 | 1 | 0.9 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
-
置信度 1.0
“Amide II band from δ(NH) coupled with (CN) vibrations, derived from trans-form of acyclic secondary amides.”
Ilic-Stojanovic 等 - 2018 - Thermosensitive hydrogels for modified release of DOI: 10.1080/00914037.2017.1354202 -
Aromatic ring 置信度 0.9
“Absorption at 1556 cm-1 assignable to ring stretching vibration of quinoid.”
Ferreira 和 Sanches - 2017 - Multimorphologies of hydrochloride polyaniline syn DOI: 10.1016/j.molstruc.2017.04.104 -
置信度 0.9
“Amide II band for α-chitin.”
Abolghassem 等 - 2019 - Preparation of alpha-chitin-based nanocomposite as DOI: 10.1016/j.heliyon.2019.e02036 -
Amide 置信度 0.9
“Explicit assignment in text.”
Anaya-Esparza 等 - 2021 - INVESTIGATING STRUCTURAL CHANGES OF CHITOSAN-TiO2 DOI: 10.20450/mjcce.2021.2396 -
Nitrogen heterocycle 置信度 0.9
“Explicit assignment: C=N of triazine ring bands at 1556 cm-1.”
Chen 等 - 2018 - The Effects of a Macromolecular Charring Agent wit DOI: 10.3390/ma11010111 -
Metal oxygen 置信度 0.9
“Indication for CuO.”
Hegazy 等 - 2022 - Effect of CuO and Graphene on PTFE Microfibers Ex DOI: 10.3390/polym14061069 -
置信度 0.9
“IR silent O-O stretching becomes active at 1556 cm-1.”
Komaty 等 - 2018 - A Facile Route toward the Increase of Oxygen Conte DOI: 10.3390/molecules23020037 -
Amide 置信度 0.9
“Explicit assignment in text: 'frequency of N-H bending of amide II (1556 cm-1)'”
Madian 等 - 2023 - Improvement of Chitosan Films Properties by Blendi DOI: 10.3390/polym15122587
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