Hydrogen bond — FTIR-absorptions-toppe og tildelinger
Dette er de karakteristiske FTIR-bølgetal, hvor Hydrogen 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
Hydrogen 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 Hydrogen bond
| Bølgetal (cm⁻¹) | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| 3400 | 28 | 26 | 1,0 |
| 3300 | 16 | 16 | 1,0 |
| 3000 | 15 | 15 | 1,0 |
| 3500 | 12 | 12 | 1,0 |
| 2900 | 11 | 10 | 1,0 |
| 2920 | 9 | 9 | 1,0 |
| 1640 | 7 | 7 | 1,0 |
| 1700 | 7 | 6 | 1,0 |
| 3450 | 6 | 5 | 1,0 |
| 2930 | 5 | 5 | 1,0 |
| 2850 | 5 | 5 | 1,0 |
| 2800 | 5 | 5 | 1,0 |
| 2926 | 5 | 5 | 1,0 |
| 3100 | 5 | 5 | 1,0 |
| 2924 | 5 | 5 | 1,0 |
| 1650 | 5 | 5 | 1,0 |
| 3340 | 5 | 5 | 1,0 |
| 3346 | 5 | 5 | 1,0 |
| 1600 | 5 | 4 | 1,0 |
| 3200 | 5 | 4 | 1,0 |
| 3600 | 5 | 4 | 1,0 |
| 2929 | 4 | 4 | 1,0 |
| 1580 | 4 | 4 | 1,0 |
| 3350 | 4 | 4 | 1,0 |
| 1107 | 4 | 4 | 1,0 |
| 3440 | 4 | 4 | 1,0 |
| 1660 | 4 | 4 | 1,0 |
| 3330 | 4 | 4 | 1,0 |
| 2922 | 4 | 4 | 1,0 |
| 2950 | 4 | 4 | 1,0 |
Viser de 30 bedst understøttede toppe ud af 578 i alt for Hydrogen 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
-
1723 cm⁻¹ tillid 1,0
“The other cm21 longed TC-HCl release, PHT-Na release behavior revealed that it peaks such as 1723 and 2941 corresponding to ester and can help the wound dressings to heal the wounds during 24 h carbon-hydrogen bonds in the chemical structur”
Askari 等 - 2016 - Three-layered electrospun PVAPCLPVA nanofibrous DOI: 10.1002/app.43309 -
635 cm⁻¹ tillid 1,0
“elements are electronegative element capable of forming reaction on compound can be identified from the peak with (1) intramolecular hydrogen bonding with the hydrogen element from cm-1 which represented the stretching weak intensity at 635”
Synthesis of a novel 1,4‐bis[2‐(5‐thiophen‐2‐yl)‐1‐benzothiophene]‐2,5‐dioctyloxybenzene pentamer for creatinine detection. DOI: 10.1002/ajoc.202100374 -
3346 cm⁻¹ tillid 1,0
“2 FTIR spectra of (a) PANI-5% ECMA, (b) PANI-10% ECMA, (c) PANI-15% ECMA, (d) PANI20% ECMA, (e) PANI-50% ECMA and (f) pure ECMA powder cm-1 composites, a broad band at 3346 is assigned to interaction ECMA/PANI by formation of hydrogen bondi”
Synthesis of novel conducting polyaniline composites based on seaweed Enteromorpha compressa macro-alga powder DOI: 10.1007/s00289-020-03191-7 -
2110 cm⁻¹ tillid 1,0
“The band at 2110 corresponds to stretching vibrations of Si-H bonds [44,45].”
Mechanical properties, chemical analysis and evaluation of antimicrobial response of Si-DLC coatings fabricated on AISI 316 LVM substrate by a multi-target DC-RF magnetron sputtering method for potential biomedical applications DOI: 10.1016/j.apsusc.2017.03.223 -
3492 cm⁻¹ tillid 1,0
“the relative importance of hydrogen bonding dispersive peaks are located at 3492 (RR, SS) and 3488 cm(cid:151)1 (RS) within interactions in chiral recognition.”
Borho 等 - 2001 - Chiral self-recognition in the gas phase the case DOI: 10.1039/b102382a -
720 cm⁻¹ tillid 1,0
“In addition, a 720 cm-1 peak, which is one of the PCM char- (2) the hydrogen bonding between the paraffin and the lignin, cellulose, and hemicellulose”
n-Heptadecane-Impregnated Wood as a Potential Material for Energy-Saving Buildings DOI: 10.3390/f13122137 -
1585 cm⁻¹ tillid 1,0
“A strong absorption cm-1 peak at 1585 is attributed intramolecular H bonds of the alcohols group.”
Chen 等 - 2019 - Baltic amber or Burmese amber FTIR studies on amb DOI: 10.1016/j.saa.2019.117270 -
1167 cm⁻¹ tillid 1,0
“FTIR spectrum of ion implanted Kapton-H sample at the dose of cm-1 The reduction in the intensity and broadening of the small intensity band at position 1167 (C-H stretching) indicates the breakage of C-H bonds.”
Chhokkar 等 - 2020 - Electrical and Structural Characterization of 100 DOI: 10.1063/5.0023335
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