What absorbs at 1457 cm⁻¹ in an FTIR spectrum?
A band near 1457 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 |
|---|---|---|---|
| Alkyl C-H | 3 | 3 | 0.9 |
| C n single bond | 1 | 1 | 0.9 |
| Amide | 1 | 1 | 0.9 |
| Aromatic ring | 1 | 1 | 0.8 |
| Protein | 1 | 1 | 0.8 |
| Secondary amine | 1 | 1 | 0.7 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Amide confidence 0.9
“Explicit assignment in snippet.”
Alahmad 等 - 2023 - Influence of the Enzymatic Hydrolysis Using Flavou DOI: 10.3390/molecules28020519 -
Alkyl C-H confidence 0.9
“peak at 1457 was characterised by the CH band, the C-H deformation”
Boudjema 等 - 2020 - Green composites based on Atriplex halimus fibers DOI: 10.1515/polyeng-2020-0068 -
C n single bond confidence 0.9
“C-N stretching mode at 1457 cm-1.”
Li 等 - 2008 - A Comparative Study of Co-PPy-MWCNTs as a Non-nobl DOI: 10.1149/1.2981872 -
Alkyl C-H confidence 0.9
“Explicit assignment.”
Macchia 等 - 2022 - In-Situ Comparative Study of Eucalyptus, Basil, Cl DOI: 10.3390/mps5030037 -
Alkyl C-H confidence 0.9
“-CH2 at 1457”
Zhao 等 - 2016 - Preparation of Magnetic Hybrid Microspheres with W DOI: 10.1155/2016/2658621 -
Protein confidence 0.8
“Snippet states 'bands indicates the presence of protein' and lists 1456.76 cm-1.”
Goldson Barnaby 等 - 2016 - Characterization of Jamaican Delonix regia and Cas DOI: 10.1155/2016/3850102 -
Aromatic ring confidence 0.8
“Weak band assigned to aromatic.”
Zajac 等 - 2023 - Exposure to polystyrene nanoparticles leads to cha DOI: 10.1038/s41598-023-36603-5 -
Secondary amine confidence 0.7
“Characteristic peak”
Rehman 等 - 2018 - Development of niosomal formulations loaded with c DOI: 10.4314/tjpr.v17i8.1
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