Carbonyl (C=O) — FTIR-absorptions-toppe og tildelinger
Dette er de karakteristiske FTIR-bølgetal, hvor Carbonyl (C=O) har tendens til at absorbere, samlet fra publiceret litteratur og rangeret efter understøttende bevis. Hver tildeling kan spores til en kilde (DOI) og krydsvalideres mod vores 130.000+ referencespektre og vidensgraf.
Backed by 8 cited sources
Hurtigt svar
Carbonyl (C=O) tildeles normalt ved at lede efter en tilbagevendende klynge af karakteristiske toppe frem for et præcist lærebogsnummer. Tabellen nedenfor viser, hvor litteraturen oftest placerer denne gruppe i FTIR, rangeret efter akkumuleret evidens.
Karakteristiske FTIR-toppe for Carbonyl (C=O)
| Bølgetal (cm⁻¹) | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| 1700 | 168 | 141 | 1,0 |
| 1740 | 151 | 129 | 1,0 |
| 1730 | 151 | 128 | 1,0 |
| 1720 | 129 | 113 | 1,0 |
| 1735 | 99 | 89 | 1,0 |
| 1650 | 96 | 85 | 1,0 |
| 1750 | 78 | 68 | 1,0 |
| 1715 | 64 | 56 | 1,0 |
| 1710 | 63 | 53 | 1,0 |
| 1725 | 58 | 51 | 1,0 |
| 1640 | 57 | 49 | 1,0 |
| 1745 | 55 | 50 | 1,0 |
| 1630 | 55 | 48 | 1,0 |
| 1743 | 55 | 48 | 1,0 |
| 1660 | 51 | 45 | 1,0 |
| 1736 | 50 | 41 | 1,0 |
| 1600 | 49 | 44 | 1,0 |
| 1732 | 47 | 42 | 1,0 |
| 1744 | 46 | 40 | 1,0 |
| 1733 | 46 | 38 | 1,0 |
| 1724 | 45 | 40 | 1,0 |
| 1734 | 42 | 36 | 1,0 |
| 1737 | 40 | 33 | 1,0 |
| 1738 | 39 | 37 | 1,0 |
| 1741 | 39 | 37 | 1,0 |
| 1728 | 38 | 31 | 1,0 |
| 1655 | 35 | 31 | 1,0 |
| 1718 | 35 | 29 | 1,0 |
| 1723 | 35 | 28 | 1,0 |
| 1729 | 35 | 27 | 1,0 |
Viser de 30 bedst understøttede toppe ud af 1094 i alt for Carbonyl (C=O).
Mulige materialer
Spektrumlogik
En funktionel gruppetildeling bliver mere sikker, når flere forventede bånd optræder sammen. Brug denne side til at finde de bedst understøttede peaks, og bekræft derefter, at den samme prøve udviser et sammenhængende mønster snarere end et enkelt isoleret hit.
Anvendelse i virkeligheden
Disse sider er nyttige til analyse af ukendte materialer, topforklaring i rapporter, polymerfejlfinding og verifikation af, om en kandidatmaterialefamilie er kemisk plausibel.
Almindelige fejl
- Brug af én funktionel-gruppe-side som en komplet materialebedømmelse uden at kontrollere resten af spektret.
- Antager, at det stærkeste bånd altid er det mest diagnostiske.
- At glemme, at forarbejdning, tilsætningsstoffer, ældning og blandinger kan flytte eller udvide forventede toppe.
Verifikationsrådgivning
Brug DSC, GC-MS eller TGA, når flere materialefamilier deler lignende bånd, eller når blandings-effekter gør FTIR-tildelingen usikker.
Litteratur bag disse tildelinger
-
747 cm⁻¹ tillid 1,0
“Therefore, the ging band appears between 850 and regions, even though only one carbonyl group is present, prob746cm-1 747cm-1 in the infrared and in Raman is band at ably due to Fermi resonance.”
Arjunan 等 - 2007 - Fourier transform infrared and Raman spectral assi DOI: 10.1016/j.saa.2006.09.044 -
1735 cm⁻¹ tillid 1,0
“The new peak appears cm-1 at 1735 which indicates the presence of a C=O bond from carboxylic acid.”
Arizka 等 - 2019 - Synthesis and Physical Properties Characterization DOI: 10.1088/1757-899X/546/4/042004 -
2137 cm⁻¹ tillid 1,0
“The peak value at 2137, and 3391 The presence of alkyl, benzyl, methyl, 500 nm showed a characteristic wavelength for the synthesis and carbonyl groups in the molecule and the polar groups like -OH -NH of gold nanoparticles to increase in a”
Biogenic Synthesis of Gold Nanoparticle from Enicostema axillare and Their In Vitro Cytotoxicity Study Against MCF-7 Cell Line DOI: 10.1007/s12668-019-00656-6 -
1729 cm⁻¹ tillid 1,0
“Explicit assignment: 'The peak about 1729 cm-1 ... can be assigned to (C=O), the stretching mode of carbonyl groups'.”
Evaluation of microwave and magnetic properties of substituted SrFe12O19 and substituted SrFe12O19/multi-walled carbon nanotubes nanocomposites DOI: 10.1016/j.matchemphys.2013.08.045 -
1731 cm⁻¹ tillid 1,0
“Initiator Dicumyl Peroxide which are characterized by the appearance of wave 100 phr (33 g) cyclic natural rubber (CNR) is cm-1 number absorption peaks in the area of 1731 weighed, then CNR is slowly inserted into the internal (absorption o”
Aritonang 等 - 2019 - Grafting of Oleic Acid On Cyclic Natural Rubber Re DOI: 10.13005/ojc/350119 -
1672 cm⁻¹ tillid 1,0
“The most intense bands were the carbonyl peak at 1672 cm-1 and the benzene ring stretching at 1514, 1477, and 1392 cm-1.”
Armenta 等 - 2005 - FTIR approaches for diuron determination in commer DOI: 10.1021/jf050268f -
1695 cm⁻¹ tillid 1,0
“LLM confirmed rule peak-group candidate”
Ashri 等 - 2018 - Modified Dioscorea hispida starch-based hydrogels DOI: 10.1016/j.ijbiomac.2017.10.125 -
1746 cm⁻¹ tillid 1,0
“LLM confirmed rule peak-group candidate”
Ault 和 Pomeroy - 2012 - Quantitative Investigations of Biodiesel Fuel Usin DOI: 10.1021/ed101097n
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