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Related Concept Videos

Radical Reactivity: Nucleophilic Radicals01:16

Radical Reactivity: Nucleophilic Radicals

Radicals adjacent to electron-donating groups are called nucleophilic radicals. These radicals readily react with electrophilic alkenes. The SOMO–LUMO interactions are the driving force for the reaction, where the high-energy SOMO of the electron-rich, nucleophilic radicals interacts with the low-energy LUMO of the electron-deficient, electrophilic alkenes. Such SOMO–LUMO interactions are the basis of reactive radical traps, affecting the selectivity in radical reactions. For instance, consider...
Nucleophilic Aromatic Substitution: Elimination–Addition01:11

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Simple aryl halides do not react with nucleophiles. However, nucleophilic aromatic substitutions can be forced under certain conditions, such as high temperatures or strong bases. The mechanism of substitution under such conditions involves the highly unstable and reactive benzyne intermediate. Benzyne contains equivalent carbon centers at both ends of the triple bond, each of which is equally susceptible to nucleophilic attack. This 50–50 distribution of products is confirmed through isotopic...
Electrophilic Aromatic Substitution: Nitration of Benzene01:20

Electrophilic Aromatic Substitution: Nitration of Benzene

The nitration of benzene is an example of an electrophilic aromatic substitution reaction. It involves the formation of a very powerful electrophile, the nitronium ion, which is linear in shape. The reaction occurs through the interaction of two strong acids, sulfuric and nitric acid.
Radical Substitution: Allylic Bromination01:27

Radical Substitution: Allylic Bromination

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Reactivity of Enolate Ions01:23

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Updated: May 12, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

Nitrogen reactivity toward beryllium: surface reactions.

A Allouche1

  • 1Physique des Interactions Ioniques et Moléculaires, CNRS and Université d'Aix-Marseille, UMR7345, Campus de Saint Jérôme, service 242, F-13397 Marseille Cedex 20, France. alain.allouche@univ-amu.fr

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|April 19, 2013
PubMed
Summary
This summary is machine-generated.

Quantum simulations explore nitrogen interactions with beryllium surfaces, crucial for fusion energy research. Understanding these reactions helps predict plasma behavior and optimize future fusion devices like ITER.

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Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
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Preparation and Reactivity of Gasless Nanostructured Energetic Materials
09:50

Preparation and Reactivity of Gasless Nanostructured Energetic Materials

Published on: April 2, 2015

Area of Science:

  • Plasma Physics and Surface Science
  • Computational Materials Science

Background:

  • Nitrogen seeding gas and beryllium armor materials are considered for future fusion devices like the International Thermonuclear Experimental Reactor (ITER).
  • Interactions between beryllium surfaces and nitrogen (atomic/molecular) are critical due to nitrogen's high reactivity, potentially forming complex chemical species.
  • Such chemical reactions can significantly impact plasma stability and performance.

Purpose of the Study:

  • To investigate nitrogen adsorption and reactions on beryllium basal surfaces using quantum density functional theory.
  • To predict the formation of various chemical moieties and their impact on plasma.
  • To explore hydrogen retention and combined nitrogen/oxygen reactivity on beryllium surfaces.

Main Methods:

  • Quantum density functional theory (DFT) calculations.
  • Simulation of molecular and atomic nitrogen interactions with beryllium surfaces.
  • Analysis of nitride radical adsorption, formation, and hydrogen retention.

Main Results:

  • Detailed quantum investigation of nitrogen adsorption on beryllium surfaces.
  • Assessment of potential chemical reactions including nitride formation and hydrogen retention.
  • Exploration of combined nitrogen and oxygen interactions and their effect on hydrogen retention.

Conclusions:

  • Quantum simulations provide predictive insights into complex beryllium-nitrogen chemistry relevant to fusion plasmas.
  • Understanding these surface interactions is vital for managing plasma-impurity dynamics in devices like ITER.
  • The study offers a basis for tentative comparisons with experimental observations.