What absorbs at 1594 cm⁻¹ in an FTIR spectrum?
A band near 1594 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
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| C=n | 3 | 3 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 0.9 |
| Amide | 2 | 2 | 0.9 |
| Carbonyl (C=O) | 1 | 1 | 0.9 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
C=n confidence 0.9
“Band at 1594 cm-1 assigned to C=N groups.”
El-Shishtawy 等 - 2014 - Nucleophilic Addition of Reactive Dyes on Amidoxim DOI: 10.1155/2014/305930 -
Amide confidence 0.9
“Peak in CS migrated to 1594 cm-1 in CACS due to vibration of amide III band.”
Lin 等 - 2021 - Preparation of modified polysulfone material decor DOI: 10.1098/rsos.210462 -
Carboxyl (COOH) confidence 0.9
“Text: 'peaks at 1594 ... COO group stretching vibration'”
Mohamed 等 - 2022 - Development of hydrogel based on Carboxymethyl cel DOI: 10.1186/s13065-022-00846-6 -
C=n confidence 0.9
“Peak assigned to imine group in curcumin isoxazole.”
Nurjanah 和 Saepudin - 2019 - Curcumin Isolation, Synthesis and Characterization DOI: 10.1063/1.5132492 -
confidence 0.9
“Explicit assignment in text.”
Sultan 等 - 2022 - Ligustrum lucidum Leaf Extract-Assisted Green Synt DOI: 10.3390/ma15051637 -
Carbonyl (C=O) confidence 0.9
“Explicit: C=O stretch from CSF at 1593.88 cm-1.”
Xuan 等 - 2017 - Effects of Preservative Pretreatments on Moisture DOI: 10.15376/biores.12.4.7986-8000 -
C=n confidence 0.9
“C=N (1594 cm-1).”
de Souza Balbinot 等 - 2022 - Antibacterial Effect of Triazine in Barrier Membra DOI: 10.3390/polym14214482 -
Amide confidence 0.8
“Amide I band range 1594 to 1718.”
Linkov 等 - 2018 - Compositional Assessment of Human Tracheal Cartila DOI: 10.1177/0194599817752310
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