Video Experimental Relacionado

Updated: Jan 21, 2026

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand

Published on: September 8, 2016

Interconversión disileno-sileno: un bisileno acíclico sintéticamente accesible

Dominik Reiter¹, Richard Holzner¹, Amelie Porzelt¹

¹Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstraße 4 , 85748 Garching bei München , Germany.

Journal of the American Chemical Society

|July 30, 2019

Resumen

Los investigadores aislaron el primer bis ((silyl) sileno estable, un compuesto altamente reactivo. Este nuevo silene activa fácilmente moléculas pequeñas como el hidrógeno y el amoníaco, mostrando potencial para la catálisis futura.

Área de la Ciencia:

Química del silicio orgánico
Química del grupo principal
Catálisis

Sus antecedentes:

Los sililenos exhiben una reactividad típicamente vista en los complejos de metales de transición.
Los sililenos altamente reactivos son posibles alternativas económicas para la catálisis.

Objetivo del estudio:

Aislar y caracterizar un nuevo bisileno.
Para investigar la reactividad de este sileno en la activación de moléculas pequeñas.
Para explorar el mecanismo de reordenamiento disileno-sileno.

Principales métodos:

Aislamiento de una mezcla de equilibrio de tetrasilíldisileno y bisilíldisileno.
Estudios de activación de moléculas pequeñas (H2, NH3).
Síntesis de bis (sil) sililenos estabilizados por el donante.
Los cálculos teóricos (DFT)

Principales resultados:

Primero aislamiento de un bisileno aislable.
Se ha demostrado una activación fácil de moléculas pequeñas (H2, NH3) en condiciones suaves.
Obtuvo información sobre la migración de 1,2-sililo en el reordenamiento disileno-sileno.

Conclusiones:

El bisileno aislado es extremadamente reactivo, lo que permite activaciones de moléculas pequeñas desafiantes.
Este trabajo proporciona una nueva clase de sililenos para potenciales aplicaciones catalíticas.
La comprensión del mecanismo de reordenamiento ayuda en el diseño de futuros catalizadores basados en silicio.

Más Videos Relacionados

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Published on: March 20, 2014

Production of Synthetic Nuclear Melt Glass

Production of Synthetic Nuclear Melt Glass

Published on: January 4, 2016

Videos de Conceptos Relacionados

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...

Synthetic Biology

Synthetic Biology

Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...

Opioid Analgesics: Synthetic and Semisynthetic Opioids

Opioid Analgesics: Synthetic and Semisynthetic Opioids

Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...

Quantifying Heat

Quantifying Heat

Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a higher temperature. When the...

First Law of Thermodynamics

First Law of Thermodynamics

Energy Conservation

Coordination Compounds and Nomenclature

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...