What absorbs at 568 cm⁻¹ in an FTIR spectrum?
A band near 568 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
Kiire vastus
A band near 568 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Võimalikud funktsionaalrühmade määramised
| Funktsionaalrühm | Toetavad faktid | Tsiteeritud allikad | Kõrgeim usaldusväärsus |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 4 | 4 | 1,0 |
| Metal oxygen | 3 | 3 | 1,0 |
| Silicon (Si) | 2 | 2 | 1,0 |
| Phosphate (PO4) | 2 | 2 | 1,0 |
| Phosphorus | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
Reiting kajastab kogunenud kirjanduslikke tõendeid, mitte ühte autoriteetset reeglit. Kinnitage alati oma proovi kontekstis.
Võimalikud materjalid
| Materjal | Toetavad piigid | Kattuvad rühmad | Tsiteeritud allikad |
|---|---|---|---|
| hematite | 568, 1030, 469 | Silicon-oxygen (Si-O), Silicon (Si), Phosphate (PO4) | 1 |
| kaolinite | 568, 3696, 693 | Silicon-oxygen (Si-O), Silicon (Si), Metal oxygen | 1 |
Materjale kuvatakse ainult siis, kui sama kirjanduse kogum toetab seda riba ja vähemalt ühte täiendavat iseloomulikku piiki.
Spektri loogika
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 568 cm⁻¹ is usually not enough for material identification by itself.
Reaalse maailma kasutus
Seda tüüpi päring on tavaline polümeeri tuvastamisel, tundmatu plasti sõeluuringul, kvaliteedikontrolli probleemide lahendamisel, ringlussevõetud materjali kontrollimisel ja kirjandusel põhineval piirkinnituste ülevaatel.
Levinud vead
- Ühe isoleeritud riba käsitlemine materjali tõendina ilma vähemalt ühte või kahte toetavat piiki kontrollimata.
- Ülekattumise ignoreerimine: mitu funktsionaalrühma võivad anda panuse sama lainearvu lähedal.
- Valideerimise vahelejätmine, kui lisandid, segud, oksüdatsioon või saastumine võivad spektrit moonutada.
Kontrollimise nõuanne
Kui ebakindlus püsib, kinnitage hüpotees DSC, GC-MS või TGA abil, eriti segude, lagunenud proovide ja täidetud polümeeride puhul.
Nende määramiste taga olev kirjandus
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Water (H2O) usaldusväärsus 1,0
“Molecular water would leave the HA crystal absorption band for molecular water onto the O-H peak at 3,568cm-1 structure through the termination sites of the c-axes channels at (Figure 10) possibly resulted in a misinterpretation 100°C.”
Li 等 - 2023 - Fourier-transformed infrared spectroscopy study of DOI: 10.3389/feart.2022.1008139 -
usaldusväärsus 1,0
“These two bands were the result of a split in the of the bulk Fe 3O 1 4 at 568 cm-1 corresponded to the υ(Fe-O) lattice stretching vibration of magnetite (Fe 3O 4) cm-1,”
Mesoporous Magnetic Cysteine Functionalized Chitosan Nanocomposite for Selective Uranyl Ions Sorption: Experimental, Structural Characterization, and Mechanistic Studies DOI: 10.3390/polym14132568 -
Silicon-oxygen (Si-O) usaldusväärsus 1,0
“For sand, no weight 302 loss was observed and only one endothermic peak, at 568°C, associated with the allotropic a b 303 transformation of quartz into quartz , was observed.”
Cousture 等 - 2021 - Study of a binder based on alkaline activated lime DOI: 10.1016/j.conbuildmat.2007.10.015 -
Metal oxygen usaldusväärsus 1,0
“The bands at 568 and 533 correspond to the vibration of cm-1 cm-1 = V-O [44].”
Transition Metal Oxodiperoxo Complex Modified Metal-Organic Frameworks as Catalysts for the Selective Oxidation of Cyclohexane DOI: 10.3390/ma13040829 -
Silicon-oxygen (Si-O) usaldusväärsus 1,0
“The band at 568 and vibration of lazurite and O-Si-O symmetric stretching vibration of wollastonite [61].”
Ma 等 - 2019 - Investigation of the Optical, Physical, and Chemic DOI: 10.3390/su11143803 -
usaldusväärsus 1,0
“New peak assignable to Pd-N.”
Nasaruddin 等 - 2022 - Synthesis, Structural Characterization, Hirshfeld DOI: 10.1021/acsomega.2c04688 -
Phosphate (PO4) usaldusväärsus 1,0
“from respective PO groups at 1069 and 1081 cm-1 43- (ν ν ν From the O-P-O bending mode PO at 568 cm-1) (for PO and Si-O-Si) [50-52,71], 452, 465 and 43434 3 as (ν ν ν and P-O stretching modes 961 cm-1 PO at 963 cm-1, PO (for PO 43-) [50,51,”
Radev 等 - 2009 - OrganicInorganic bioactive materials Part II in DOI: 10.2478/s11532-009-0076-1 -
Silicon (Si) usaldusväärsus 1,0
“described that the peaks centered at From literature data, the bands at 568, 600, 960, 1043 cm-1 455 are associated with the presence of ν Si-O-Ca ν ν ν 43-, 43cm-1 and 1008 correspond to PO PO and 4 1”
Radev 等 - 2010 - OrganicInorganic bioactive materials Part IV In DOI: 10.2478/s11532-009-0142-8
Kas teil on selle ribaga spekter?
Laadige üles oma FTIR spekter ja saage sekunditega täielik tõlgendusaruanne — piikide määramised kirjandusviidetega, raamatukogu vasted ja usaldusväärsusega hinnatud tõendite ahel.