What absorbs at 505 cm⁻¹ in an FTIR spectrum?
A band near 505 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
Ateb cyflym
A band near 505 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.
Aseiniadau grŵp swyddogaethol posibl
| Grŵp swyddogaethol | Ffeithiau ategol | Ffynonellau a ddyfynnwyd | Hyder uchaf |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Carboxyl (COOH) | 2 | 2 | 1.0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
Mae＇r safle＇n adlewyrchu tystiolaeth llenyddiaeth gronnwyd, nid rheol awdurdodol sengl. Cadarnhewch bob amser yn erbyn eich cyd-destun sampl.
Deunyddiau posibl
| Deunydd | Copaon ategol | Grwpiau sy＇n gorgyffwrdd | Ffynonellau a ddyfynnwyd |
|---|---|---|---|
| CuO | 505, 453, 1000 | Metal oxygen, Carboxyl (COOH) | 1 |
| TiO2 | 505, 1700, 1093 | Metal oxygen, Alkyl C-H, Carboxyl (COOH) | 1 |
Mae deunyddiau＇n cael eu dangos dim ond pan fydd yr un gronfa lenyddiaeth yn cefnogi＇r band hwn ac o leiaf un brig nodweddiadol ychwanegol.
Rhesymeg sbectrwm
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 505 cm⁻¹ is usually not enough for material identification by itself.
Defnydd yn y byd go iawn
Mae＇r math hwn o ymholiad yn gyffredin mewn adnabod polymer, sgrinio plastig anhysbys, datrys problemau QC, dilysu deunydd wedi＇i ailgylchu, ac adolygiad o aseiniad copa wedi＇i gefnogi gan lenyddiaeth.
Camgymeriadau cyffredin
- Trin un band ynysig fel prawf o ddeunydd heb wirio o leiaf un neu ddau gopa cefnogol.
- Anwybyddu gorgyffwrdd: gall grwpiau swyddogaethol lluosog gyfrannu ger yr un rhif ton.
- Hepgor dilysu pan fo ychwanegion, cymysgeddau, ocsideiddio, neu halogiad yn gallu ystumio＇r sbectrwm.
Cyngor dilysu
Pan fo amwysedd yn parhau, dilyswch y rhagdybiaeth gyda DSC, GC-MS, neu TGA, yn enwedig ar gyfer cymysgeddau, samplau dirywiedig, a pholymerau llawn.
Llenyddiaeth y tu ôl i＇r aseiniadau hyn
-
Metal oxygen hyder 1.0
“LLM confirmed rule peak-group candidate”
Pascoal 等 - 2020 - Treatment by TiO2UV of wastewater generated in po DOI: 10.5004/dwt.2020.26390 -
Aromatic ring hyder 1.0
“nanocomposite shows that the origin of the vibrational bands is as FT-IR spectra of the Pani-TiO 2 cm-1 cm-1 follows: a band at 3454 is due to the NH stretching of aromatic amines, another at 2854 505cm-1 is due to aromatic CH-stretching, a”
Rajakani 和 Vedhi - 2013 - Synthesis and electrochemical studies of TiO2 - Pa DOI: 10.4028/www.scientific.net/AMR.678.263 -
Acetate hyder 1.0
“Therewere three drastic decrement intensity peaks of C=O, C-OH, and C-O groups with the generation of new peaks at 576 cm-1, 505 cm-1 and 453 cm-1 corresponding to CuO stretching vibrations, that were explained by Gulati et al.”
Effect of rGO wt.% on the Preparation of rGO/CuO Nanocomposites at Different Test Periods and Temperatures DOI: 10.3390/cryst12101325 -
hyder 1.0
“The spectra of samples 100Zn0Co and 100Zn0Co-T contained a peak at 505 cm-1, which can be attributed to zinc oxide with oxygen”
Butova 等 - 2020 - Synthesis of ZnO Nanoparticles Doped with Cobalt U DOI: 10.3390/nano10071275 -
Metal oxygen hyder 1.0
“cm-1 551 in case of pure ZnO which corresponds to the Zn-O bond stretching 1 cm-1 1 vibration that shifted to about 505 for the polymeric hybrid [15].”
Elkady 等 - 2015 - Formulation of Nano-zinc Oxide into Biocomposite B DOI: 10.1063/1.4914227 -
Carboxyl (COOH) hyder 1.0
“The band at 505 could be assigned to CoO.”
Cobalt Oxide Catalysts in the Form of Thin Films Prepared by Magnetron Sputtering on Stainless-Steel Meshes: Performance in Ethanol Oxidation DOI: 10.3390/catal9100806 -
hyder 1.0
“bands at 1115 and 1025 can also indicate Si-O-Si cm-1 505 quartz bond and Si-O stretching of silicates/clays, and the 2515 peak could refer to thiol”
Mineral and chemical changes of sediments after Cu sorption and then desorption induced by synthetic root exudate DOI: 10.1016/j.chemosphere.2019.124393 -
Alkyl C-H hyder 1.0
“Si-O-Si 1257 0.422 0.505 cm-1) gle bending peak of C-H (1510 observed in the freshly Si-O 3643”
Khan 等 - 2021 - The Structural, Physical, and In Vitro Biological DOI: 10.14744/eej.2020.36349
Oes gennych sbectrwm gyda＇r band hwn?
Llwythwch eich sbectrwm FTIR i fyny a chael adroddiad dehongli llawn — aseiniadau brig gyda chyfeiriadau llenyddiaeth, cyfateb llyfrgell, a chadwyn dystiolaeth â gradd hyder — mewn eiliadau.