What absorbs at 426 cm⁻¹ in an FTIR spectrum?
A band near 426 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 6 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
confidence 1.0
“The peaks at 426 and 743 appeared only for FHO, which was assigned to the Fe-O-Fe stretching vibration [24] and would be the Fe-OH band, respectively [25].”
Kim 等 - 2019 - The Application of Alginate Coated Iron Hydroxide DOI: 10.3390/app9183835 -
Water (H2O) confidence 1.0
“First peak reflects slightly 426 bound water loss and second peak evinces degradation of polymeric structure (Giancone et al., 2011).”
Evaluation of structural integrity and functionality of commercial pectin based edible films incorporated with corn flour, beetroot, orange peel, muesli and rice flour DOI: 10.1016/j.foodhyd.2019.01.022 -
confidence 1.0
“Further addition of new peaks at 613 and 426 cm-1 strongly revealed the growth of inorganic particles (due to (a.u.) Fe-O vibrations) on the NSS surface.”
Facile Synthesis of Magnetic Nigella Sativa Seeds: Advances on Nano-Formulation Approaches for Delivering Antioxidants and Their Antifungal Activity against Candida albicans DOI: 10.3390/pharmaceutics15020642 -
Metal oxygen confidence 1.0
“spectra of the deposited ZnO Characteristic cm-1 Zn-O peaks at 426 are related to stretching vibration and vibration-phonon mode E (transversal optic) also, a 1 cm-1 Zn-O is attributed to the stretching second peak at 490 reports.19-21 vibr”
Salinas Dominguez 等 - 2020 - Antibody Immobilization in Zinc Oxide Thin Films a DOI: 10.1021/acsomega.0c02583 -
confidence 1.0
“4 cm-1 νCu(II)-O 426.0 is assigned to the stretching vibrations of copper oxide CuO [25].”
Silva 等 - 2021 - Potential Production of Theranostic Boron Nitride DOI: 10.3390/nano11112907 -
confidence 0.9
“Peak assigned to Si-O-Si rocking.”
Mahisagar 等 - 2012 - Deposition of porous low-k thin films using Tween DOI: 10.1117/12.927332
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