Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Radical Anti-Markovnikov Addition to Alkenes: Overview01:25

Radical Anti-Markovnikov Addition to Alkenes: Overview

3.3K
The addition of hydrogen bromide to alkenes in the presence of hydroperoxides or peroxides proceeds via an anti-Markovnikov pathway and yields alkyl bromides.
3.3K
Radical Reactivity: Overview01:11

Radical Reactivity: Overview

2.1K
Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired...
2.1K
Radical Anti-Markovnikov Addition to Alkenes: Mechanism01:17

Radical Anti-Markovnikov Addition to Alkenes: Mechanism

3.7K
The reaction of hydrogen bromide with alkenes in the presence of hydroperoxides or peroxides proceeds via anti-Markovnikov addition. The radical chain reaction comprises initiation, propagation, and termination steps.
The mechanism starts with chain initiation, which involves two steps. In the first chain initiation step, a weak peroxide bond is homolytically cleaved upon mild heating to form two alkoxy radicals. In the second initiation step, a hydrogen atom is abstracted by the alkoxy...
3.7K
Radical Reactivity: Nucleophilic Radicals01:16

Radical Reactivity: Nucleophilic Radicals

2.1K
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...
2.1K
π Molecular Orbitals of the Allyl Radical01:27

π Molecular Orbitals of the Allyl Radical

3.4K
Allyl radicals are three-carbon conjugated systems. They are readily formed as intermediates in halogenation reactions of alkenes involving the addition of halogen to the allylic carbon instead of the double bond. As seen in allyl cations and anions, each of the three sp2-hybridized carbon atoms in allyl radicals has an unhybridized p orbital. These orbitals combine to give three π molecular orbitals.
The allyl systems have identical molecular orbitals but differ in the number of π electrons....
3.4K
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride01:26

Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride

1.8K
Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation...
1.8K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

High-<i>Q</i> microresonators unveil quantum rare events.

Science advances·2026
Same author

Excited-state orbital angular momentum enables all-optical molecular spin coherence.

Chemical science·2026
Same author

Symmetry-Enabled Optical Spin Initialization of Luminescent Organic Radical Doublet States.

Journal of the American Chemical Society·2026
Same author

Quantifying the Number of Dark, Gray, and Bright States as a Function of the Spectral Overlap in Polaritonic Systems.

Nano letters·2026
Same author

Molecular Qubits for Anion Sensing by Tuning Electron Spin Relaxation via Axial Ligand Field.

Angewandte Chemie (International ed. in English)·2026
Same author

Floquet States of Chemoselective Alternating Current Electrosynthesis.

Journal of the American Chemical Society·2026

Video Experimental Relacionado

Updated: Jun 25, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.7K

Dirradicales de hidrocarburos alternantes como qubits moleculares dirigibles ópticamente

Yong Rui Poh1, Dmitry Morozov2, Nathanael P Kazmierczak3

  • 1Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093, United States.

Journal of the American Chemical Society
|May 27, 2024
PubMed
Resumen

Los investigadores desarrollaron qubits moleculares libres de metales utilizando simetría de alternancia para crear moléculas orgánicas de alto espín. Estos "m-dimeros" permiten la polarización de espín del estado fundamental para la ciencia de la información cuántica y las aplicaciones de detección magnética.

Más Videos Relacionados

Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

25.5K
Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch
09:33

Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch

Published on: February 7, 2022

3.4K

Videos de Experimentos Relacionados

Last Updated: Jun 25, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.7K
Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

25.5K
Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch
09:33

Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch

Published on: February 7, 2022

3.4K

Área de la Ciencia:

  • Ciencia de la información cuántica
  • Magnetismo molecular
  • Productos electrónicos orgánicos

Sus antecedentes:

  • Las moléculas de alto espín son cruciales para el diseño de qubits de abajo hacia arriba y la detección magnética.
  • Las moléculas libres de metales ofrecen ventajas de costo y medioambientales sobre los complejos de metales de transición.
  • Las moléculas orgánicas de caparazón abierto luminiscentes existentes a menudo carecen de un carácter radical de estado fundamental estable para los qubits.

Objetivo del estudio:

  • Diseñar sistemas moleculares libres de metales con un carácter diradical de alto estado fundamental para aplicaciones de qubits.
  • Explorar el potencial de la simetría de alternancia en el control de las interacciones entre radicales.
  • Para establecer una vía para qubits moleculares libres de metales ópticamente direccionables.

Principales métodos:

  • Utilizó la simetría de alternancia para minimizar las interacciones entre los radicales del estado fundamental.
  • Sistemas π meta-enlazados (m-dimeros) sintetizados y analizados.
  • Se realizó un análisis electrónico detallado de la estructura de los hidrocarburos m-diradicales alternantes.

Principales resultados:

  • Se ha logrado un alto carácter diradical en el estado fundamental de los m-dimeros.
  • Identificó simetrías específicas en estados excitados de m-diradicales.
  • Potencial demostrado para la polarización de espín del estado fundamental a través de la resonancia magnética detectada ópticamente (ODMR).

Conclusiones:

  • Los m-diradicales de hidrocarburos alternantes son plataformas factibles para centros de color moleculares libres de metales.
  • La estrategia de m-dimer desarrollada permite una robusta polarización de espín del estado fundamental para aplicaciones de qubits.
  • Este trabajo allana el camino para tecnologías cuánticas rentables y respetuosas con el medio ambiente.