What absorbs at 1413 cm⁻¹ in an FTIR spectrum?
A band near 1413 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 |
|---|---|---|---|
| Alkene (C=C) | 2 | 2 | 0.95 |
| Carboxyl (COOH) | 2 | 2 | 0.9 |
| Aromatic ring | 1 | 1 | 1.0 |
| C=n | 1 | 1 | 0.95 |
| C-O single bond | 1 | 1 | 0.7 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Aromatic ring confidence 1.0
“explicit assignment”
Roy 等 - 2014 - Composite alginate hydrogel microparticulate deliv DOI: 10.4103/2229-516X.140728 -
C=n confidence 0.95
“Explicit assignment: '1413 cm-1 (C=N and C=C stretching vibration)'.”
Wang 等 - 2020 - Supporting data for the photo-induced deformation DOI: 10.1016/j.polymer.2019.04.071. -
confidence 0.9
“Explicit assignment: 'C=O group with C-O combination'.”
Thanh 等 - 2020 - Characterization of hyaluronic acid extracted from DOI: 10.1016/j.ijbiomac.2020.04.137 -
Carboxyl (COOH) confidence 0.9
“Explicit assignment in text.”
Kaewprachu 等 - 2022 - Mechanical and Physicochemical Properties of Compo DOI: 10.3390/polym14091872 -
Carboxyl (COOH) confidence 0.9
“symmetric stretching”
Melilli 等 - 2020 - DLP 3D Printing Meets Lignocellulosic Biopolymers DOI: 10.3390/polym12081655 -
confidence 0.9
“Explicit assignment in text”
Wang 等 - 2019 - A Facile Synthesis of Core-Shell SiO2@Cu-LBMS Nano DOI: 10.3390/ma12233978 -
confidence 0.8
“assigned to aromatic CH in-plane bending”
Enrique De-la-Torre 等 - 2022 - Binational survey of personal protective equipment DOI: 10.1016/j.jhazmat.2021.128070 -
C-O single bond confidence 0.7
“Corresponds to CO group vibration”
Mirkovic 等 - 2018 - Structural, Morphological and Electrical Propertie DOI: 10.2298/SOS1801095M
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