What absorbs at 657 cm⁻¹ in an FTIR spectrum?
A band near 657 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
可能性のある官能基アサイン
| 官能基 | 裏付け事実 | 引用元 | 最高信頼度 |
|---|---|---|---|
| Metal oxygen | 3 | 3 | 1.0 |
| Ring structure | 2 | 2 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Nitrogen heterocycle | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
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これらのアサインの根拠となる文献
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信頼度 1.0
“The Raman peaks observed at 483 are attributed to the stretching mode vibration of Mn-O bonds, and another peak observed at cm-1 657 corresponds to A1g mode vibration of Mn 3O 4.”
Synthesis and characterization of Mn3O4/MnSnO3 nanocomposites for supercapacitor applications DOI: 10.1007/s12588-019-09250-7 -
Alkene (C=C) 信頼度 1.0
“The FTIR spectrum showed peaks at 1,592, 1,627 and 1,657 cm-1 assigned to C=C stretching of the imidazole ring and characteristic peaks at 1,605 and 1,766 assigned to C=O stretching.”
Synthesis, Characterization and Reactivity Ratio Study of Poly(di(tri-n-butyltin) citraconate-co-N-vinylimidazole) DOI: 10.3390/molecules15074750 -
信頼度 1.0
“For this same 31, 39, and 46), thus exposing underneath layers, corresamples (showing a gypsum rich content) strong peaks late with the FTIR analysis of the samples, which indiascribed to lead white as well as a sharp peaks around cm-1 cate”
Cortea 等 - 2020 - Uncovering hidden jewels an investigation of the DOI: 10.1186/s40494-020-00401-3 -
Ring structure 信頼度 1.0
“The peaks cm-1 cm-1 occurring at 657 and 554 can be associated with the out of plane vibrations of ring structure and C-”
Okeke 等 - 2018 - Characterization of hibiscus sabdariffa fiber as p DOI: 10.1590/S1517-707620180004.0550 -
信頼度 1.0
“Previous researchers have demonstrated that the peak around 657 is attributed 2 cm-1 to Ti-O-Ti stretching vibration, whereas the peak around 590 is due to the vibration of Ti-O-O.”
Physicochemical and Rheological Properties of a Transparent Asphalt Binder Modified with Nano-TiO2 DOI: 10.3390/nano10112152 -
Amide 信頼度 1.0
“cm-1 Other bands at 657.1 and 611.8 indicated an O=C-N bend of aliphatic secondary cm-1 amides [38].”
Adsorptive Performance of Walnut Shells Modified with Urea and Surfactant for Cationic Dye Removal DOI: 10.3390/w15081536 -
信頼度 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 -
信頼度 0.8
“Characteristic apatite signal”
Mirkovic 等 - 2018 - Structural, Morphological and Electrical Propertie DOI: 10.2298/SOS1801095M
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