What absorbs at 2065 cm⁻¹ in an FTIR spectrum?
A band near 2065 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
Brzi odgovor
A band near 2065 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.
Moguće dodjele funkcionalnih skupina
| Funkcionalna skupina | Potporni dokazi | Citirani izvori | Najveća pouzdanost |
|---|---|---|---|
| Adsorbed carbon monoxide | 2 | 2 | 1,0 |
| C#c | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 0,8 |
Rangiranje odražava akumulirane literaturne dokaze, a ne jedno autoritativno pravilo. Uvijek provjerite u kontekstu vašeg uzorka.
Mogući materijali
| Materijal | Potporni vrhovi | Preklapajuće skupine | Citirani izvori |
|---|---|---|---|
| silver nanoparticles | 2065, 1636, 1631 | Alkyl C-H | 1 |
Materijali su prikazani samo kada ista literatura podržava ovu traku i barem jedan dodatni karakteristični vrh.
Logika spektra
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 2065 cm⁻¹ is usually not enough for material identification by itself.
Upotreba u stvarnom svijetu
Ova vrsta upita uobičajena je u identifikaciji polimera, probiru nepoznate plastike, rješavanju problema u kontroli kvalitete, provjeri recikliranog materijala i pregledu dodjele vrhova potkrijepljenom literaturom.
Uobičajene pogreške
- Tretiranje jedne izolirane vrpce kao dokaza materijala bez provjere barem jednog ili dva podržavajuća pika.
- Zanemarivanje preklapanja: više funkcionalnih skupina može doprinositi u blizini istog valnog broja.
- Preskakanje validacije kada aditivi, mješavine, oksidacija ili kontaminacija mogu izobličiti spektar.
Savjet za provjeru
Kada nejasnoća ostane, validirajte hipotezu pomoću DSC, GC-MS ili TGA, posebno za mješavine, degradirane uzorke i punjene polimere.
Literatura iza ovih dodjela
-
Aromatic ring pouzdanost 1,0
“The peak of 2065.46 represents the presence groups in different absorbance regions between of aromatic compounds.”
Dev 等 - 2018 - GREEN SYNTHESIS OF SILVER NANOPARTICLES USING LEAF DOI: 10.13040/IJPSR.0975-8232.9(9).3897-02 -
C#c pouzdanost 1,0
“The data revealed the peaks of metabolites given the impressions at 1645 and 2065 The peak at cm-1 cm-1 2065 shows alkyne stretching vibrations.”
Development of Selenium Nanoparticle Based Agriculture Sensor for Heavy Metal Toxicity Detection DOI: 10.3390/agriculture10120610 -
Adsorbed carbon monoxide pouzdanost 1,0
“Spectra showed in figure 4.a present a shift of the absorbed cm-1 carbonyls species on the platinum surface from the initial band at 2055 to a cm-1 predominant band at 2065 assigned to CO adsorbed on metallic platinum species”
Upgrading the PtCu intermetallic compounds: The role of Pt and Cu in the alloy DOI: 10.1016/j.cattod.2019.11.026 -
Adsorbed carbon monoxide pouzdanost 1,0
“The obvious differThe intensities of these bands slightly decreased with the 2 ence is the detection of the bands due to adsorbed CO (2065 increase of the evacuation temperature.”
Rasko 等 - 2004 - Formaldehyde formation in the interaction of HCOOH DOI: 10.1016/j.jcat.2004.03.025 -
pouzdanost 1,0
“2 °C different: show higher activity in ethanol reforming and higher hydrogen at 300 (blue spectrum in Figure 2) is pronounced cm-1, cm-1 selectivity.25 bands at 2065 1950 and at lower wavenumbers due to linear and bridge-bonded CO on exten”
Spezzati 等 - 2017 - Atomically Dispersed Pd-O Species on Ceo(2)(111) a DOI: 10.1021/acscatal.7b02001 -
Alkyl C-H pouzdanost 0,8
“Bands at 2065 cm-1 ascribed to stretching vibrations of alkanes (C-H).”
Ismail 等 - 2020 - Evaluation of a naturally derived tannin extracts DOI: 10.1007/s13202-019-0717-7
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