What absorbs at 542 cm⁻¹ in an FTIR spectrum?
A band near 542 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
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Aromatic ring | 2 | 2 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。
這些指派背後的文獻
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Metal oxygen 信心 1.0
“of C-O-C at 1147 and Fe-O stretching at 542 The maximum Cr(IV) removal efficiency of 91.8% was recorded at an initial Cr(VI) concentration of 40 mg/L, pH of 3, adsorbent dose of 100 mg/100 mL, and a contact time of 90 min, whereas the minim”
Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater DOI: 10.1007/s13201-023-01880-y -
Aromatic ring 信心 1.0
“The unique benzene ring in TPPO absorption peak at 542 To avoid adding such a marker to every sample, we found an oil characteristic peak (4334/”
Li 等 - 2018 - Novel method based on fourier transform infrared s DOI: 10.1080/10942912.2017.1381113 -
Acetate 信心 1.0
“cm-1 group absorption peak between 1,500 and 1,400 the band between 1,542 cm-1 and 965 is attributed to vibration of the C-O, C-N, and C-N, demonstrating the cm-1 presence of organic acids, sugars, and ethanol in this area;”
Zhao 等 - 2021 - Evaluation of a strawberry fermented beverage with DOI: 10.7717/peerj.11974 -
Carboxyl (COOH) 信心 1.0
“The band at 542 is attributed to the vibrations of CoO units of 2, the band at 479 cm-1 is attributed to the bending vibrations of O-P-O in (PO2-)n chain 6 cm-1 CoIII-O bonds [19,20].”
The Influence of CoO/P2O5 Substitutions on the Structural, Mechanical, and Radiation Shielding of Boro-Phosphate Glasses DOI: 10.3390/ma14216632 -
Aromatic ring 信心 1.0
“p-cymene, being an aromatic hydrocarbon, exhibited several signals in the fingerprint region at 1514, 813, 720/542 cm-1, due to aromatic C=C-C ring stretch, C-H of para disubstituted aromatic rings, and aromatic C-H out-ofplane bends.”
Rapid Classification and Recognition Method of the Species and Chemotypes of Essential Oils by ATR-FTIR Spectroscopy Coupled with Chemometrics DOI: 10.3390/molecules27175618 -
信心 0.8
“Explicit assignment: band for iron-oxide at 542 cm-1”
Structural characterization and adsorptive ability of green synthesized Fe3O4 nanoparticles to remove Acid blue 113 dye DOI: 10.1016/j.surfin.2021.100947
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