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

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
Valence Bond Theory02:42

Valence Bond Theory

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...
Coordination Number and Geometry02:57

Coordination Number and Geometry

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
Molecular Shapes01:18

Molecular Shapes

Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...
Structural Isomerism02:34

Structural Isomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

A Green Processing Strategy for the Formation of Electrochromic Metal-Organic Assemblies.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Transparent neutral-colored CsPbBr<sub>3</sub>perovskite solar cell with biological soybean lecithin food additives.

Nanotechnology·2026
Same author

Bridging or exchanging partners? A supramolecular perspective on bifunctional molecules and their potential for triggerable enzyme therapy.

Current opinion in chemical biology·2026
Same author

Hitchhiker's Guide to the Preparation of Novel Benzimidazoline-Based n‑Type Dopants.

Chemistry of materials : a publication of the American Chemical Society·2025
Same author

Direct chiroptical correlation of dissymmetric crystal morphologies.

Nature communications·2025
Same author

Low-Background His-Tag-Targeting Probes for Turn-On Fluorescence Detection of Cell Surface Proteins and Their Binding Interactions.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same journal

Carbonylative Aminative Suzuki-Miyaura Coupling: Pd-Catalyzed Synthesis of Amides from Vinyl/Aryl Halides and Boronic Acids.

Journal of the American Chemical Society·2026
Same journal

Divergent Asymmetric Synthesis of Glutinosasins A-E.

Journal of the American Chemical Society·2026
Same journal

Ultrastrong Polyketone Hot-Melt Adhesives Enabled by Ni-Catalyzed Carbonylative Polymerization.

Journal of the American Chemical Society·2026
Same journal

Programmable Anomalous Photovoltaics Enabled by Light-Electric Dual-Field Control.

Journal of the American Chemical Society·2026
Same journal

Biomimetic Redox-Mediated Proton Relay in Nanoreactors for Photocatalysis.

Journal of the American Chemical Society·2026
Same journal

The Sulfur Monoxide-Water Complex.

Journal of the American Chemical Society·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: May 30, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

La transferencia de moléculas y electrones a través de conjuntos moleculares basados en la coordinación.

Leila Motiei1, Revital Kaminker, Mauro Sassi

  • 1Department of Organic Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel.

Journal of the American Chemical Society
|August 18, 2011
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores exploraron la estructura interna de los ensamblajes moleculares. Descubrieron que la permeabilidad de la película delgada y el transporte molecular se pueden controlar ajustando la composición de la película, la estructura molecular y el grosor.

Más Videos Relacionados

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
10:13

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

Videos de Experimentos Relacionados

Last Updated: May 30, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
10:13

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

Área de la Ciencia:

  • Ciencia de los materiales Ciencia de los materiales.
  • Química de las superficies.
  • Nanotecnología La nanotecnología es la nanotecnología.

Sus antecedentes:

  • Comprender la estructura interna de los conjuntos moleculares confinados en la superficie es crucial para el diseño de materiales avanzados.
  • Las películas finas cultivadas capa por capa (LbL) ofrecen propiedades ajustables para diversas aplicaciones.

Objetivo del estudio:

  • Investigar la relación entre la composición y estructura de las películas LbL y sus propiedades internas.
  • Para determinar cómo las características de la película influyen en la permeabilidad molecular y la transferencia de electrones.

Principales métodos:

  • Fabricación de películas delgadas crecidas capa por capa con diferentes composiciones y componentes moleculares.
  • Análisis sistemático de la estructura de la película y su correlación con las propiedades funcionales.

Principales resultados:

  • Control sistemático demostrado de la permeabilidad de las películas delgadas LbL mediante el ajuste de la composición de la película.
  • Mostró la capacidad de ajustar el transporte molecular y la transferencia de electrones modificando la estructura de los componentes moleculares.
  • El espesor establecido como un parámetro clave para controlar la permeación de moléculas frente a la transferencia de electrones.

Conclusiones:

  • La estructura interna de los conjuntos moleculares confinados en la superficie puede ser diseñada con precisión.
  • Las propiedades de la película LbL, incluida la permeabilidad y la transferencia de electrones, son altamente sintonizables a través de modificaciones de composición y estructura.
  • El grosor juega un papel crítico en dictar el equilibrio entre la permeación molecular y la transferencia de electrones en estos sistemas.