Nitro (NO2) — FTIR-absorptions-toppe og tildelinger

Hurtigt svar

Nitro (NO2) 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 Nitro (NO2)

Viser de 30 bedst understøttede toppe ud af 65 i alt for Nitro (NO2).

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

• 1380 cm⁻¹ tillid 1,0

  “The peaks at 1380, 1529 tromagnetic spectrum, molecules undergo electronic tranindicates the presence of nitro compounds.”

  Synthesis of Phytonanocomposite of Zinc Oxide by Ixora coccinea Linn for Cancer Treatment DOI: 10.1007/s10904-016-0382-y
• 435 cm⁻¹ tillid 1,0

  “3,5 3,0 loss of 35.4% of the sample is presented with DTG peaks at 434.8 °C, AgNP+AH 2,5 and 476.7 attributed to the decomposition to NO 2,O and 2 °C, Ag.”

  Antimycotic nail polish based on humic acid‐coated silver nanoparticles for onychomycosis DOI: 10.1002/jctb.6676
• 1060 cm⁻¹ tillid 1,0

  “The new peak appeared at 1060 cm-1 after nitric acid modification was assigned to the presence of asymmetric NO2 stretch vibration that confirm carbon surface modification [41].”

  Elkady 等 - 2020 - New Activated Carbon from Mine Coal for Adsorption DOI: 10.3390/ma13112498
• 1533 cm⁻¹ tillid 1,0

  “The peak at 1533 is caused by N-O stretching of aromatic nitro cm-1 compounds, the peak at 1386 is caused by symmetric carboxylate stretching, and the peak at 1327 is caused by N-O asymmetric stretching and reveals the presence of a nitro c”

  Nematicidal activity of seaweed-synthesized silver nanoparticles and extracts against Meloidogyne incognita on tomato plants DOI: 10.1038/s41598-022-06600-1
• 614 cm⁻¹ tillid 1,0

  “were present in both FTIR spectra of plant extract and FeNPs, such as alkyl halides, alkynes, aromatics and aliphatic amines, esters, ethers, alcohol, carboxylic acids, and nitro Nanomaterials2022,12,2404 11of25 compounds with peaks at 526.”

  Green Synthesis and Characterization of Iron Nanoparticles Synthesized from Aqueous Leaf Extract of Vitex leucoxylon and Its Biomedical Applications DOI: 10.3390/nano12142404
• 1409 cm⁻¹ tillid 1,0

  “5) showed six peaks which indicate the pres1409.02 is assigned to N=O bending nitro groups.”

  Ragavendran 和 Natarajan - 2015 - Insecticidal potency of Aspergillus terreus agains DOI: 10.1007/s11356-015-4961-1
• 3441 cm⁻¹ tillid 1,0

  “of 1.121 min and 2.029 min indicate 1,3-propanediol, 2-methyl-2cm-1 Peak at 3441 corresponds to asymmetric stretching vibration nitro-, dinitrate and 1,2,3-propanetriol, 1,3-dinitrate, respectively.”

  Shareef 和 Bhavya - 2021 - Extraction, phytochemical analysis and in silico a DOI: 10.21276/ap.2021.10.2.59
• 836 cm⁻¹ tillid 1,0

  “The latter is apparent from the subsequent increase in γ = WSR cm-1, A the peak area at 836 which represents the signal of nitrate - (1) ν - NO 2 3 ions in the crystal state.”

  Zhang 等 - 2014 - In Situ Observation on the Dynamic Process of Evap DOI: 10.1021/jp412073c