Amide — FTIR-absorptions-toppe og tildelinger
Dette er de karakteristiske FTIR-bølgetal, hvor Amide har tendens til at absorbere, samlet fra offentliggjort litteratur og rangeret efter understøttende evidens. Hver tildeling kan spores til en kilde (DOI) og er krydsvalideret mod vores 320,000+ referencespektrer og vidensgraf.
Understøttet af 8 citerede kilder
Hurtigt svar
Amide 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 Amide
| Bølgetal (cm⁻¹) | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| 1650 | 248 | 213 | 1,0 |
| 1550 | 118 | 105 | 1,0 |
| 1640 | 105 | 96 | 1,0 |
| 1700 | 100 | 91 | 1,0 |
| 1660 | 92 | 78 | 1,0 |
| 1600 | 91 | 79 | 1,0 |
| 1740 | 90 | 81 | 1,0 |
| 1630 | 86 | 77 | 1,0 |
| 1655 | 85 | 80 | 1,0 |
| 1540 | 83 | 74 | 1,0 |
| 1730 | 78 | 74 | 1,0 |
| 1720 | 71 | 66 | 1,0 |
| 1735 | 59 | 58 | 1,0 |
| 1545 | 53 | 46 | 1,0 |
| 1645 | 52 | 49 | 1,0 |
| 1656 | 50 | 43 | 1,0 |
| 1240 | 48 | 44 | 1,0 |
| 1652 | 47 | 45 | 1,0 |
| 1654 | 47 | 44 | 1,0 |
| 3300 | 47 | 43 | 1,0 |
| 1635 | 42 | 41 | 1,0 |
| 1637 | 42 | 38 | 1,0 |
| 1644 | 41 | 37 | 1,0 |
| 1638 | 41 | 37 | 1,0 |
| 1500 | 41 | 34 | 1,0 |
| 1651 | 40 | 37 | 1,0 |
| 1750 | 39 | 37 | 1,0 |
| 1639 | 39 | 36 | 1,0 |
| 1653 | 39 | 35 | 1,0 |
| 1657 | 36 | 31 | 1,0 |
Viser de 30 bedst understøttede toppe ud af 1462 i alt for Amide.
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
-
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.”
Synthesis and Physical Properties Characterization of Montmorillonite-modified Carbon Nanotubes Filler DOI: 10.1088/1757-899X/546/4/042004 -
1566 cm⁻¹ tillid 1,0
“1566cm-1, R2 due to NH in-plane bending, triazine stretching In every case a, good linear fit was obtained with valand C-N stretching, respectively, [23] and so, these bands ues >0.999.”
Determination of cyromazine in pesticide commercial formulations by vibrational spectrometric procedures DOI: 10.1016/j.aca.2004.02.063 -
968 cm⁻¹ tillid 1,0
“2000cm-1, 1.21mgg-1 baseline established in for a ChlorThe absorption bands of Chlorpyrifos are located at 1549, pyrifosstandardandthenoisemeasuredinthesameregionfor 968cm-1, 1412, 1339, 1165, 1088, 1025 and due to C N a blank spectrum and”
A validated and fast procedure for FTIR determination of Cypermethrin and Chlorpyrifos DOI: 10.1016/j.talanta.2005.03.008 -
1650 cm⁻¹ tillid 1,0
“CdO cm-1, the band in the ester group at 1751 that of 1700 cm-1 CdO cm-1 On the other hand, the Acesulfame-K band at 945 does due to the stretch in carboxylic acids, and the band CdO cm-1 not overlap with any Aspartame band, but the low sig”
Armenta 等 - 2004 - FTIR determination of aspartame and acesulfame-k i DOI: 10.1021/jf049218l -
1713 cm⁻¹ tillid 1,0
“This means that the addition shows sharp absorption and low intensity at 1712.8 cm-1 of DVB is able to shift the hydroxyl bonds in blends, which indicates the presence of C=O carbonyl so that DVB makes the blends more compatible.”
Grafting of Oleic Acid On Cyclic Natural Rubber Resiprene-35 Using Dicumyl Peroxide Initiator and Divinylbenzene Compatibilizers For Paint Binder In Polyamide Thermoplastics DOI: 10.13005/ojc/350119 -
1297 cm⁻¹ tillid 1,0
“Other less important absorption bands are located at 1582 CdC cm-1, due to the stretching in chloroalkenes, and 1297 cm-1, and 1175 corresponding to amide and benzene ring breathing, respectively (20).”
FTIR Approaches for Diuron Determination in Commercial Pesticide Formulations DOI: 10.1021/jf050268f -
1632 cm⁻¹ tillid 1,0
“The transport mechanism of showed amide I and II absorption peaks at 1632 and 1554 19 cm@1, hydrogels was a combination of non-Fickian and Super Case II.”
pH‐Responsive Studies of Bacterial Cellulose /Chitosan Hydrogels Crosslinked with Genipin: Swelling and Drug Release Behaviour DOI: 10.1002/slct.201902290 -
1723 cm⁻¹ tillid 1,0
“The characteristics sharp peak at 1723 is attributed to stretching vibration of carbonyl (-C=O) group from GMSG/VMSG [46, 47], the intensity of which increases with the increase of GMSG/VMSG contents in the membrane”
Novel Silica Functionalized Monosodium Glutamate/PVA Cross-linked Membranes for Alkali Recovery by Diffusion Dialysis DOI: 10.21203/rs.3.rs-283846/v1
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