Related Experiment Video
Updated: Apr 1, 2026
09:37
Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
10.2K
Amidinate-Stabilized Group 9 Metal-Silicon(I) Dimer and -Silylene Complexes
Sabrina Khoo1, Hui-Xian Yeong1, Yongxin Li1
1Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore.
Inorganic Chemistry
|October 2, 2015
Summary
This study explores the coordination chemistry of silicon(I) dimers with iridium and rhodium complexes. New silicon-metal complexes were synthesized and characterized, revealing insights into their structures and reactivity.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
- Silicon Chemistry
Background:
- Amidinate-ligated silicon(I) dimers represent a unique class of low-valent silicon compounds.
- Understanding their coordination behavior with transition metals is crucial for developing novel materials and catalysts.
Purpose of the Study:
- To investigate the coordination chemistry of the amidinate-stabilized silicon(I) dimer with group 9 metal complexes.
- To synthesize and characterize new silicon-metal complexes and elucidate their structural and electronic properties.
Main Methods:
- Synthesis of silicon(I) dimer and its reaction with iridium and rhodium precursors.
- Characterization of resulting complexes using NMR spectroscopy and X-ray crystallography.
- Density Functional Theory (DFT) calculations for electronic structure analysis.
Main Results:
- Formation of a base-stabilized silicon(I) dimer-iridium complex.
- Synthesis of amidinate-stabilized silicon(I) dimer-rhodium complexes and dimeric rhodosilylenes.
- Observation of reactions involving Wilkinson's catalyst and rearrangement products.
Conclusions:
- The study successfully demonstrated the coordination of amidinate-stabilized silicon(I) dimers with group 9 metals.
- New silicon-metal complexes with diverse structures and reactivity were obtained.
- DFT calculations provided insights into the electronic structure of key intermediates.
Related Concept Videos
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
967
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...
967
03:45Formation of Complex Ions
26.8K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
26.8K
01:23Properties of Organometallic Compounds
2.2K
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.
2.2K
01:19Complexation Equilibria: The Chelate Effect
1.6K
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...
1.6K
02:51Metal-Ligand Bonds
25.6K
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...
25.6K
02:34Structural Isomerism
22.4K
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...
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...
22.4K