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

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

10.2K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
10.2K
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
Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

50.5K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
50.5K
Ionic Crystal Structures02:42

Ionic Crystal Structures

15.5K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
15.5K
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

35.0K
sp3d and sp3d 2 Hybridization
35.0K
Structure of Conjugated Dienes01:16

Structure of Conjugated Dienes

6.0K
Introduction
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
6.0K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Effect of Ti Substitution on V-V Dimerization in Ilmenite-Type MgVO<sub>3</sub>.

Inorganic chemistry·2026
Same author

Direct puncture and NBCA embolization for refractory lymphatic leakage after inguinal lymphadenectomy in the absence of puncturable lymph nodes guided by lymphoscintigraphy.

Radiology case reports·2026
Same author

Surgical technique for uniportal VATS right S10 segmentectomy with the pulmonary ligament approach, performing the intersegmental division last.

Journal of visualized surgery·2026
Same author

Mucinous cystic neoplasm of the liver with biliary prolapse mimicking intraductal papillary neoplasm of the bile duct: a case report.

Abdominal radiology (New York)·2026
Same author

Development and preclinical evaluation of [<sup>111</sup>In]In-DTPA-EphA2-57-1: a single-photon emission computed tomography probe targeting EphA2-expressing tumors.

Bioorganic & medicinal chemistry·2026
Same author

Philadelphia chromosome-negative but BCR::ABL1-positive acute lymphoblastic leukemia: a real-world multicenter cohort study.

International journal of hematology·2026

Video Experimental Relacionado

Updated: Oct 9, 2025

Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library
10:17

Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library

Published on: January 14, 2020

7.9K

La dimerización de cationes en un sistema de enrejado de panal 3d

Hajime Yamamoto1, Sachiko Kamiyama1, Ikuya Yamada2

  • 1Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan.

Journal of the American Chemical Society
|December 17, 2021
PubMed
Resumen

En MgVO3, un sistema de celosía 3d ^ 1, los investigadores observaron la dimerización V-V por debajo de 500 K, lo que lleva a una transición magnética a no magnética. Este estudio revela el comportamiento de los electrones de valencia en estos sistemas de baja dimensión.

Más Videos Relacionados

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 2016

8.2K
Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

6.6K

Videos de Experimentos Relacionados

Last Updated: Oct 9, 2025

Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library
10:17

Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library

Published on: January 14, 2020

7.9K
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 2016

8.2K
Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

6.6K

Área de la Ciencia:

  • Ciencias de los materiales
  • Física de la materia condensada
  • Química del estado sólido

Sus antecedentes:

  • La transición de Peierls implica cambios simultáneos en los estados electrónicos y las estructuras cristalinas en sistemas de baja dimensión.
  • La dimerización catiónica, una forma de transición de Peierls, está bien documentada en el VO2, pero es rara en los sistemas de celosía de panal 3d^1.
  • Las celosías de panal son susceptibles a la inestabilidad de Peierls debido a su baja dimensionalidad inherente.

Objetivo del estudio:

  • Para investigar la dimerización V-V en el tipo de ilmenita MgVO3, un sistema de celosía de nido de abeja 3d^1.
  • Para entender el comportamiento de los electrones de valencia en este material específico de baja dimensión.
  • Explorar las posibles transiciones de fase magnética y electrónica asociadas con la dimerización.

Principales métodos:

  • Se emplearon experimentos de rayos X de sincrotrón para observar cambios estructurales.
  • Se realizaron mediciones dependientes de la temperatura para identificar las transiciones de fase.
  • El análisis se centró en la formación de enlaces directos V-V y las propiedades electrónicas asociadas.

Principales resultados:

  • Se observó un patrón escalonado de dímeros V-V por debajo de 500 K en MgVO3.
  • La dimerización observada fue acompañada por una transición de un estado magnético a un estado no magnético.
  • La evidencia sugiere una posible fase líquida de enlace de valencia existente entre 500 K y 600 K.

Conclusiones:

  • El estudio demostró con éxito la dimerización V-V en un sistema de celosía de panal 3d^1 (MgVO3).
  • Los hallazgos destacan una transición magnética a no magnética vinculada a la dimerización estructural.
  • La investigación proporciona información sobre el comportamiento electrónico complejo de los electrones de valencia en materiales de baja dimensión.