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

Valence Bond Theory02:42

Valence Bond Theory

9.8K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
9.8K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.2K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
1.2K
Atomic Nuclei: Nuclear Spin01:08

Atomic Nuclei: Nuclear Spin

3.4K
All atomic particles possess an intrinsic angular momentum, or 'spin'. Electrons, protons, and neutrons each have a spin value of ½, although protons and neutrons in nuclei may have higher half-integer spins owing to energetic factors.
Atomic nuclei have a net nuclear spin, , which can have an integer or half-integer value. In atomic nuclei, the spins of protons are paired against each other but not with neutrons, and vice versa. Consequently, an even number of protons does not...
3.4K
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

1.3K
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
1.3K
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

52.8K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
52.8K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.1K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.1K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Activation of methane by the tantalum trioxide anion, TaO<sub>3</sub><sup></sup>.

Physical chemistry chemical physics : PCCP·2026
Same author

Report of high data rate macromolecular crystallography (HDRMX) meeting, 23 July 2025.

Structural dynamics (Melville, N.Y.)·2026
Same author

Excitonic spin torque in a magnetic semiconductor.

Nature materials·2026
Same author

Conformational flexibility of soybean lipoxygenase is coupled to crystal solvent content in serial crystallography.

bioRxiv : the preprint server for biology·2026
Same author

Synthesis and Characterization of Layered Actinide (U, Np, Pu) Oxide and Hydroxide Phases.

Inorganic chemistry·2026
Same author

Author Correction: Hidden states and dynamics of fractional fillings in twisted MoTe<sub>2</sub> bilayers.

Nature·2026

Video Experimental Relacionado

Updated: Sep 30, 2025

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
08:55

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

5.7K

Superátomo de alto espín estabilizado por el relleno de doble subcapa

Dinesh Bista1, Alexander P Aydt2, Kevin J Anderton3

  • 1Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23220, United States.

Journal of the American Chemical Society
|March 15, 2022
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores descubrieron que los grupos de calogenuro de metales de transición específicos con doble relleno de subcapa electrónica exhiben una notable estabilidad y momentos magnéticos de alto espín. Este hallazgo abre nuevas vías para diseñar superátomos magnéticos estables.

Más Videos Relacionados

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

8.8K
High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
08:42

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

11.7K

Videos de Experimentos Relacionados

Last Updated: Sep 30, 2025

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
08:55

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

5.7K
Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

8.8K
High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
08:42

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

11.7K

Área de la Ciencia:

  • * La nanociencia y la química de los materiales
  • * Química Cuántica y Teoría del Superátomo

Sus antecedentes:

  • * El confinamiento cuántico en pequeños cúmulos conduce al llenado de capas electrónicas, creando superátomos con mayor estabilidad.
  • * Los grupos de metal de transición octaédricos pueden lograr configuraciones estables con 100 o 114 electrones de valencia.

Objetivo del estudio:

  • * Para predecir teóricamente y verificar experimentalmente un cúmulo superatómico que combina alta estabilidad y magnetismo de alto espín.
  • * Investigar el papel del relleno de doble subcapas en el logro de estas propiedades en grupos de metal de transición calogenuro.

Principales métodos:

  • * Cálculos teóricos de las estructuras electrónicas y de la estabilidad.
  • * Síntesis experimental y caracterización de un nuevo grupo, [NEt4]5[Fe6S8(CN) 6].
  • * Mediciones de las propiedades magnéticas y análisis de la estructura electrónica.

Principales resultados:

  • * Se ha demostrado que un grupo con 107 electrones de valencia logra un doble llenado de subcapas (57 + 50 electrones).
  • * Se confirmó una alta estabilidad y un momento magnético de alto espín (S = 7/2) en el racimo sintetizado.
  • * Mostró una estructura electrónica totalmente deslocalizada en el nuevo superátomo.

Conclusiones:

  • * La primera evidencia computacional y experimental de la importancia del llenado dual de subcapas en grupos de calogenuros de metales de transición.
  • Se estableció una nueva clase de superátomos magnéticos estables de alto espín con aplicaciones potenciales en la ciencia de los materiales.