What absorbs at 489 cm⁻¹ in an FTIR spectrum?
A band near 489 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
Atribuiri posibile ale grupelor funcționale
| Grup funcțional | Fapte suport | Surse citate | Încredere maximă |
|---|---|---|---|
| Metal oxygen | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Fluorine (C-F) | 1 | 1 | 1,0 |
| C-S single bond | 1 | 1 | 1,0 |
Clasamentul reflectă dovezile acumulate din literatură, nu o singură regulă autoritară. Confirmați întotdeauna în contextul mostrei dvs.
Literatura din spatele acestor atribuiri
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C-S single bond încredere 1,0
“The oxidation reaction for TU followed first cm-1 that at 489 is assigned to the C-S stretch.”
Heterogeneous kinetics of thiourea electro‐catalytic oxidation reactions on palladium surface in the aqueous medium DOI: 10.1002/asia.202001016 -
Fluorine (C-F) încredere 1,0
“The -CF 2 CF2 wagging (489 cm-1) and bending (610 cm-1), the skeletal bending (764 cm-1), and the -CH2”
Terraza 等 - 2018 - Preparation of CuONPs@PVDFNon-Woven Polyester Com DOI: 10.3390/polym10080862 -
Ring structure încredere 1,0
“1322 1322 1319 1321 1317 OH bending 1052 1051 1051 1053 1053 The C-O-C bending vibration OH group 1019 1020 1012 1020 1020 C-O bond of the CH2 rocking motion 912 911 906 905 904 C-O stretching + CH2 657-534 590-518 594-579 669-572 691-584 R”
Structural and UV-blocking properties of carboxymethyl cellulose sodium/CuO nanocomposite films DOI: 10.1038/s41598-023-28032-1 -
Alkyl C-H încredere 1,0
“488 the NHs, due to the hydrogel structure at nanoscale, is a 528 analyzing the possible shift of bands in the CH stretching 489 x favorable environment for loading drugs in a well-tolerated 529 region or measuring the CH scissoring bandwid”
Musazzi 等 - 2018 - Gellan Nanohydrogels Novel Nanodelivery Systems f DOI: 10.1021/acs.molpharmaceut.7b00926 -
încredere 1,0
“In addition, the intense bands seen at 756 657 cm-1 and 489 ascribed to the Ti-O stretching vibration and confirmed the existence of TiO nanoparticles.”
UV-shielding properties of a cost-effective hybrid PMMA-based thin film coatings using TiO2 and ZnO nanoparticles: a comprehensive evaluation DOI: 10.1038/s41598-023-34120-z -
încredere 0,7
“Text mentions 'other deformations in other functional groups in bands close to ... ~489'”
Degradation of Hydrogels Based on Potassium and Sodium Polyacrylate by Ionic Interaction and Its Influence on Water DOI: 10.3390/polym14132656
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