What absorbs at 440 cm⁻¹ in an FTIR spectrum?
A band near 440 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
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Borate | 1 | 1 | 1,0 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Bibliographie derrière ces attributions
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Borate confiance 1,0
“5 g 3 cm-1 maximum (481°C) for sample NVLBB3 and minimum is due to B-O bond stretching in tetrahedral cm-1 (440°C) for sample LBB.”
Synthesis, thermal and spectroscopic characterization of lithium bismuth borate glasses containing mixed transition metal ions DOI: 10.13036/17533562.57.3.018 -
Metal oxygen confiance 1,0
“(cm-1) a 370-400 Stretching mode of vibration of Bi-O-Bi linkages Stretching vibration of La-O 430 Stretching vibration of Ce-O 440”
Investigation of Structural, Physical, and Attenuation Parameters of Glass: TeO2-Bi2O3-B2O3-TiO2-RE2O3 (RE: La, Ce, Sm, Er, and Yb), and Applications Thereof DOI: 10.3390/ma15155393 -
Metal oxygen confiance 1,0
“720-750 O-Ti-O deformation in sheet units [29] 44TiO monomers [11], [29], [30] 790-830 Ti-O stretching vibrations in 440 SiO Q with zero bridging oxygen in monomer units, [27] 840-860”
Feng 等 - 2019 - Effects of CaOSiO2 on Viscous Behaviors and Struc DOI: 10.2355/isijinternational.ISIJINT-2018-444 -
Metal oxygen confiance 1,0
“4) the presence of an absorption band centred around cm-1, 440 which is known to be characteristic for TiO 2-type Fig.”
Fernandes 等 - 2006 - Property change in multifunctional TiCxOy thin fil DOI: 10.1016/j.tsf.2006.07.047 -
Carboxyl (COOH) confiance 1,0
“43(cid:1) (cid:3)C For 45% PO , only one peak at 440 is seen, corresponding the smaller and larger interparticle pores decreased, which is in to the strong acid sites due to the saturation of the surface with line with the decrease in the s”
Nano-sized mesoporous phosphated tin oxide as an efficient solid acid catalyst DOI: 10.1039/c8ra08962k -
Metal oxygen confiance 1,0
“LLM confirmed rule peak-group candidate”
Antibacterial Activity of TiO2 Nanoparticles Prepared by One-Step Laser Ablation in Liquid DOI: 10.3390/app11104623
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