Video Experimental Relacionado
Updated: May 13, 2026
08:26
Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of Gold(III)
Published on: August 31, 2018
Un anillo de oro: complejos moleculares de oro carbido complejos
Elliot S Borren1, Anthony F Hill, Rong Shang
1Research School of Chemistry, Australian National University , Canberra, ACT 0200, Australia.
Journal of the American Chemical Society
|March 15, 2013
Resumen
Las nuevas estanilcarbinas actúan como versátiles agentes de transmisión de carbina. Estos complejos de molibdeno y tungsteno permiten la síntesis de nuevos complejos de carbido de oro y facilitan la transferencia de unidades de carbido al paladio.
Área de la Ciencia:
- Química organometálica Química orgánica de los metales.
- Coordinación Química de la Coordinación
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- Los complejos de carbino son cruciales en la química organometálica.
- El desarrollo de nuevas rutas sintéticas para los complejos de carbido metálico es un área de investigación activa.
- Las reacciones de transmetalización ofrecen vías a complejas arquitecturas moleculares.
Objetivo del estudio:
- Para sintetizar nuevas estanilcarbinas como agentes de transmitación.
- Para preparar complejos heteronucleares moleculares de carbido de oro.
- Para investigar las capacidades de transferencia de unidades de carbido de estos nuevos complejos.
Principales métodos:
- Síntesis de estanilcarbinas [M(CSnMe3) ((CO) 2 ((Tp*) ] (M = Mo, W) a partir de las correspondientes bromocarbinas.
- Reacciones de transmesación de carbino con precursores de oro.
- Investigación de la transferencia de la unidad de carbido al paladio.
Principales resultados:
- Se sintetizaron estanilcarbinas fácilmente obtenidas [M(CSnMe3) ((CO) 2 ((Tp*) ].
- Preparación efectiva de complejos heteronucleares de carbido de oro molecular, incluidos [M(CAuPPh3) ((CO) 2 ((Tp*) ] y [W(CAu) ((CO) 2 ((Tp*) ]4.
- Transferencia demostrada de la unidad de carbido de los complejos de oro al paladio.
Conclusiones:
- Las estanilcarbinas son reactivos efectivos para la síntesis de complejos de carbido de oro.
- Los complejos de carbido de oro sintetizados pueden transferir ligandos de carbido.
- Este trabajo amplía el alcance de la química del carbino y la síntesis de complejos de carbido metálico.
Videos de Conceptos Relacionados
00:43Complexometric Titration: Ligands
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...
01:19Complexation Equilibria: The Chelate Effect
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...
02:42Valence 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...
02:51Metal-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...
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...
01:23Properties of Organometallic Compounds
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
02:10Carbocations
Carbocations are one of the reaction intermediates formed during several nucleophilic substitutions or elimination reactions. A carbocation is an electron-deficient species with the central carbon atom having six electrons and three bonded atoms. The central carbon in a carbocation is sp2 hybridized with trigonal planar geometry. It has an empty p orbital perpendicular to the plane of the structure that can accept electrons. Thus, carbocations act as strong electrophiles and may react with any...