Synthesis and Cooperative Reactivity of Sterically Encumbered Silyl and Silylene ( t Bu P 2 Si)Co Complexes
Abstract
Cobalt complexes of a sterically encumbered bis(phosphino)silyl pincer-type ligand are reported, including a base-free cobalt silylene. Introduction of tert -butyl groups on the phosphine donors significantly impacts the reactivity of resulting complexes, leading to hindered reactions both at the cobalt and at the silicon center and changing the free-energy profile for the silylene-catalyzed formation of adamantyl isocyanate from adamantyl azide and carbon monoxide. Ultimately, destabilization of 6-coordinate intermediates renders the catalytic reaction significantly less effective than for smaller-profile analogues with isopropyl and cyclohexyl phosphine substituents.
Fields of Study & Subjects
Synthesis and characterization of novel inorganic/organometallic compounds
Organoboron and organosilicon chemistry
Organometallic Complex Synthesis and Catalysis
Publication details
- Journal / source
- Organometallics
- Publisher
- American Chemical Society (ACS)
- Volume
- 45
- Issue
- 3
- Pages
- 297–305
- Publication date
- 27 January 2026
- Language
- EN