Video Experimental Relacionado
Updated: Jan 15, 2026
09:45
Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
10.8K
Síntesis de metalostanilenos a partir de complejos de polihidruro de metales de transición
Marcel Bamberg1, Thomas Gasevic2, Jose Martinez Fernandez1
1Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States.
Journal of the American Chemical Society
|October 8, 2025
Resumen
Se sintetizaron nuevos complejos de hidruro de metalostanileno de alta valencia a partir de polihidritos de metales de transición y amidostanilenos. Este trabajo destaca el papel de la ambifilicidad del amidostanileno en la formación de enlaces Ir-Sn.
Área de la Ciencia:
- Química organometálica
- Química del grupo principal
- Química de coordinación
Sus antecedentes:
- Los complejos de polihidruro de metales de transición son precursores versátiles en la síntesis inorgánica.
- Los amidostanilenos son compuestos reactivos del grupo principal con carácter ambifílico.
- La comprensión de la reactividad de los amidostanilenos con los metales de transición es crucial para el desarrollo de nuevas metodologías sintéticas.
Objetivo del estudio:
- Para sintetizar complejos de hidruro de metalostanileno de cadena abierta de alta valencia.
- Investigar las vías de reacción entre los polihidruros de metales de transición y los amidostanilenos sustituidos por arilo.
- Explorar el papel de la ambifilicidad del amidostanileno en la formación de enlaces del grupo principal de metales.
Principales métodos:
- Reacción de los complejos de polihidruro de iridio con varios amidostanilenos.
- Caracterización de nuevos complejos de metalostanileno y amidostanileno mediante técnicas espectroscópicas.
- Análisis de los subproductos de la reacción y de las vías mecanicistas.
Principales resultados:
- Síntesis de metalostanilenos (MeBDIDipp) IrH3SnDMP (1) y Cp*IrH3SnDMP (2).
- Formación de bis ((metallostannylene) Cp*IrH2 ((SnDMP) 2 (3) a través de la reacción con un segundo equivalente de amidostannylene.
- Síntesis de nuevos amidostanilenos DMPSn [N(Dipp) ] (4) y TripSn [N(Dipp) ] (5).
- Observación de las vías de competencia, incluida la coordinación de estanileno y la liberación de H2 en la reacción de (BDI) IrH con amidostanileno 5, dando lugar al complejo 6.
- Formación de metalostanileno caracterizada por la desprotonación formal del polihidruro de metal de transición por el amidostanileno.
Conclusiones:
- Los amidostanilenos reaccionan eficientemente con los polihidruros de metales de transición para formar metalostanilenos de alta valencia.
- La ambifilicidad de los amidostanilenos es clave para la formación exitosa de enlaces Ir-Sn.
- Las vías de reacción se pueden ajustar, lo que lleva a la formación de metalostanileno o a la coordinación de estanileno.
![The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)
Videos de Conceptos Relacionados
02:51Metal-Ligand Bonds
24.0K
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...
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...
24.0K
01:19Complexation Equilibria: The Chelate Effect
1.2K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.2K
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
797
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
797
01:17Ziegler–Natta Chain-Growth Polymerization: Overview
3.9K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.9K
01:13Olefin Metathesis Polymerization: Overview
2.5K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
2.5K
00:43Complexometric Titration: Ligands
2.2K
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
2.2K