What absorbs at 1257 cm⁻¹ in an FTIR spectrum?
A band near 1257 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 |
|---|---|---|---|
| Alkyl C-H | 2 | 2 | 1.0 |
| Silicon carbon | 1 | 1 | 1.0 |
| Nitrate | 1 | 1 | 1.0 |
| Amide | 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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Amide 信心 1.0
“tively large shifts in characteristic peaks of amide III, cm-1, At 4 DAI, spectra of diseased and healthy floret of cellulose, and phosphate (1246.5 shift to 1256.8 cm-1, different wheat cultivars are shown in Figure 5A.”
Synchrotron based phase contrast X-ray imaging combined with FTIR spectroscopy reveals structural and biomolecular differences in spikelets play a significant role in resistance to Fusarium in wheat DOI: 10.1186/s12870-014-0357-5 -
Nitrate 信心 1.0
“1625-1100 these features are within the range which 2.37 corresponds to coordinated nitrates on TiO Within the nitrate cm-1 category, the peak at 1160 can be assigned to the stretching mode (ø(NO)) of the protonated anionic nitrosyl NOH spe”
Pena 等 - 2004 - Identification of surface species on titania-suppo DOI: 10.1021/jp0313122 -
Alkyl C-H 信心 1.0
“the band at 1256.81 can be 2 indicates CH symmetrical and CH2 asymmetrical stretching;”
Efficient Degradation of High-Molecular-Weight Hyaluronic Acid by a Combination of Ultrasound, Hydrogen Peroxide, and Copper Ion DOI: 10.3390/molecules24030617 -
Alkyl C-H 信心 1.0
“located at 2964 and the asymmetric stretching CH2 of ethyl ester is at 2937 cm-1 Table 1 for PEA shows, at 1726 due to the O=C stretching vibration of the ester cm-1 cm-1 group [25], at 1469 due to CH deformation vibration of ethyl ester, a”
Flores-Hernandez 等 - 2021 - Synthesis of a Biodegradable Polymer of Poly (Sodi DOI: 10.3390/polym13040504 -
Silicon carbon 信心 1.0
“No pores were observed in the struccm-1 cm-1 1257 and a peak of Si-CH was observed at 791 in”
Khan 等 - 2021 - The Structural, Physical, and In Vitro Biological DOI: 10.14744/eej.2020.36349 -
信心 1.0
“The bands at 1257, 1175, 827 and 746 are due to tion of BPA-Acr-NVP, BPA-Acr-NVP-0.5Eu and BPA-Acr-NVP0.5 Tb in nitrogen stretching and bending vibrations of different HCH, CCH and COH moieties.”
Synthesis and thermal characterization of luminescent hybrid composites based on bisphenol A diacrylate and NVP DOI: 10.1007/s10973-019-08914-1
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