N n bond — FTIR-absorptions-toppe og tildelinger
Dette er de karakteristiske FTIR-bølgetal, hvor N n bond 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
N n bond 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 N n bond
| Bølgetal (cm⁻¹) | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| 1392 | 2 | 2 | 1,0 |
| 1430 | 2 | 1 | 1,0 |
| 1030 | 2 | 1 | 1,0 |
| 1620 | 2 | 1 | 1,0 |
| 1575 | 1 | 1 | 1,0 |
| 1521 | 1 | 1 | 1,0 |
| 1535 | 1 | 1 | 1,0 |
| 1538 | 1 | 1 | 1,0 |
| 1404 | 1 | 1 | 1,0 |
| 1642 | 1 | 1 | 1,0 |
| 3464 | 1 | 1 | 1,0 |
| 1021 | 1 | 1 | 1,0 |
| 873 | 1 | 1 | 1,0 |
| 1276 | 1 | 1 | 1,0 |
| 3259 | 1 | 1 | 1,0 |
| 2350 | 1 | 1 | 1,0 |
| 1100 | 1 | 1 | 1,0 |
| 900 | 1 | 1 | 1,0 |
| 802 | 1 | 1 | 1,0 |
| 1500 | 1 | 1 | 1,0 |
| 1111 | 1 | 1 | 1,0 |
| 3345 | 1 | 1 | 1,0 |
| 1588 | 1 | 1 | 1,0 |
| 2141 | 1 | 1 | 1,0 |
| 1490 | 1 | 1 | 1,0 |
| 1530 | 1 | 1 | 1,0 |
| 1643 | 1 | 1 | 1,0 |
| 1641 | 1 | 1 | 1,0 |
| 2974 | 1 | 1 | 1,0 |
| 813 | 1 | 1 | 1,0 |
Viser de 30 bedst understøttede toppe ud af 94 i alt for N n bond.
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
-
3535 cm⁻¹ tillid 1,0
“The Fourier transform infrared (FTIR) spectra of these coesite crystals taken in the OH cm(cid:3)1, stretching region consist of two sharp peaks at 3535 and 3500 which were assigned previously to two different boron-based n n point defects,”
Deon 等 - 2009 - Coupled boron and hydrogen incorporation in coesit DOI: 10.1127/0935-1221/2009/0021-1843 -
2500 cm⁻¹ tillid 1,0
“Moreover, the broad peak at 2500 and 3500 cm corresponding to N N-H of amines and O-H of carboxylic was removed in this sample indicating their successful”
Covalent diphenylalanine peptide nanotube conjugated to folic acid/magnetic nanoparticles for anti-cancer drug delivery DOI: 10.1016/j.jddst.2017.06.005 -
3020 cm⁻¹ tillid 1,0
“Band strength and integrated cross-sections missing bands are (3020/3009 (3009/ 2 3 cm(cid:3)1), cm(cid:3)1), cm(cid:3)1) n n Band strength is an important spectroscopic parameter 2968 (2999/2968 (2917/2917 4”
Temperature-dependent absorption cross-section measurements of 1-butene (1-C4H8) in VUV and IR DOI: 10.1016/j.jqsrt.2012.09.014 -
490 cm⁻¹ tillid 1,0
“(cm(cid:2)2) K Reference Bond Mode Wavenumber (cm(cid:2)1) symmetric stretching 490 - [15] Si-N N-Si3 Si-H Si-H wag-rocking”
Effect of PECVD silicon oxynitride film composition on the surface passivation of silicon wafers DOI: 10.1016/j.solmat.2011.09.052 -
1550 cm⁻¹ tillid 1,0
“The peak at 1550 region is the amide tration was 0.1 mg/ml, encapsulation efficiency was C-N N-H II band and is due to or stretching, and highest at 87.44%.”
Fabrication of pristine electrospun kafirin nanofiber mats loaded with thymol and carvacrol DOI: 10.1007/s10853-020-05663-7 -
2390 cm⁻¹ tillid 1,0
“6b shows that one adsorption peak at 3124 was cm-1 visible in the (NH 4) 3PO FTIR spectrum, and the adsorption peaks near 2390 and 2211 were caused 4 by N-N vibrations, which were related to the absorption peaks of N-H groups.”
Ibrahim 等 - 2023 - Role of ammonium phosphate in improving the physic DOI: 10.37190/ppmp/161510 -
2020 cm⁻¹ tillid 1,0
“However, two distinct peaks at 2020 and 1668 emerge in the FT-IR spectra of PAN fibers after irradiation that correspond to the C=C=N (ketenimine) and C=N-N=C conjugation groups.”
Liu 等 - 2020 - Structure and tensile properties of carbon fibers DOI: 10.1007/s10853-019-04182-4 -
2012 cm⁻¹ tillid 1,0
“The peakposition n n n 2012.”
Long 等 - 2012 - From synthetic to biogenic Mg-containing calcites DOI: 10.1039/c2cp22453d
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