What absorbs at 621 cm⁻¹ in an FTIR spectrum?
A band near 621 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Metal oxygen | 2 | 2 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
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Metal oxygen 置信度 1.0
“The spectra exhibit two 3 Pre-pro cm-1 main vibrational absorption peaks at around 621 and 393 characterizing the stretching and cm-1 bending vibrational modes of the Ti-O bond, respectively.”
Hemeda 等 - 2021 - Synthesis of nanometer-sized PbZrxTi1-xO3 for gamm DOI: 10.1016/j.jpcs.2020.109688 -
置信度 1.0
“cm-1) The molar volume is of high interest, because it is two characteristic bands (621 and 726 and they are directly related to the spatial distribution of the oxygen in attributed to the stretching vibration between tellurium and the glas”
Rada 等 - 2009 - Structural and electronic properties of tellurite DOI: 10.1007/s10853-009-3433-8 -
Carbonyl (C=O) 置信度 1.0
“carbonyl groups of SA and hydrogen groups located outside of It was noted cm-1 that the distinctive band corresponding to SA at 620.84, 1107.99, and 1657.41 is dramatically diminished and relocated for BIC system.”
Hydroxypropyl–Cyclodextrin for Delivery of Sinapic Acid via Inclusion Complex Prepared by Solvent Evaporation Method DOI: 10.3390/pr10102046 -
Water (H2O) 置信度 1.0
“Previous studies (Vichi, Eliazyan, and 1,621cm-1 of the different water molecules bands at 1,684 and Kazarian2018)carriedoutonhistoricalleatherbookcoversdated typicallyfoundinhydratedCasulfatesaremaskedbythecollagen between the 16th and the”
Cortea 等 - 2020 - Application of Spectroscopic and Hyperspectral Ima DOI: 10.3389/fmats.2020.601339 -
Ring structure 置信度 1.0
“The cm-1 cm-1 Uroctea durandi band at 640 for (7) is due to tyrosine ring mode, and the band at 621 is due”
Ide 等 - 2011 - Structural characterization of a variety of spider DOI: 10.3233/SPE-2011-0495 -
Metal oxygen 置信度 1.0
“appearedbetween800and900cm-1.33Whenceriumwasdoped The synthesized catalyst was characterized by spectral Ce-O in STANPs, a characteristic band of appeared at 621 techniques, including Fourier transform infrared (FTIR), cm-1 34 along with ot”
Khan 和 Siddiqui - 2018 - Ce@STANPsZrO2 as Nanocatalyst for Multicomponent DOI: 10.1021/acsomega.8b01043
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