The Reactivity of Transition Metal-Silicon Compounds
Abstract
The objective of this work was to synthesize and study early- transition-metal silyl compounds that have the potential to carry out novel chemical transformations and to serve as precursors to solid-state materials containing both silicon and an early-transition-metal. We discovered several routes to new early-transition-metal silyl complexes. These complexes contain - SiMe3, -Si(SiMe3)3 and -SiHMes2 (Mes=mesityl) silyl groups. These new complexes, of scandium, zirconium, hafnium, niobium and tantalum, have been characterized by a variety of spectroscopic techniques, including x-ray crystallography. Reactivity studies with these new complexes establish basic reactivity patterns toward a range of reactants. Unusual reactions that were discovered for these M- Si bonds include: reductive elimination fo silyl groups with chloride, first observation of Carbon Monoxide insertion into a transition-metal-silicon bond, routes to the first stable formylsilane, (Me3Si)3SiCHO, facile ether cleavage following CO/CO coupling by a tantalum-silicon bond, formation of tetrahedral Lewis base adducts of M(eta (2) -COSiR3) silaacyl complexes, insertion of organic carbonyls into a tantalum-silicon bond with nucleophilic silyl group transfer, and facile photochemical and thermal insertions of ethylene into metal-silicon bonds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 08, 1988
- Accession Number
- ADA200371
Entities
People
- T. D. Tilley
Organizations
- University of California, San Diego