Abstract
Air‐ and moisture‐stable heterobimetallic tetrahedral clusters [Cp(CO)2MSiR]2 (M=Mo or W; R=SitBu3) were isolated from the reaction of N‐heterocyclic carbene (NHC) stabilized silyl(silylidene) metal complexes Cp(CO)2M=Si(SitBu3)NHC with a mild Lewis acid (BPh3). Alternatively, treatment of the NHC‐stabilized silylidene complex Cp(CO)2W=Si(SitBu3)NHC with stronger Lewis acids such as AlCl3 or B(C6F5)3 resulted in the reversible coordination of the Lewis acid to one of the carbonyl ligands. Computational investigations revealed that the dimerization of the intermediate metal silylidyne (M≡Si) complex to a tetrahedral cluster instead of a planar four‐membered ring is due to steric bulk.
Highlights
Tetrahedral clusters that consist of main-group elements are attractive synthetic targets because of their high ring strain and reactivity.[1]
Computational investigations revealed that the dimerization of the intermediate metal silylidyne (MSi) complex to a tetrahedral cluster instead of a planar four-membered ring is due to steric bulk
We concluded that a MSi complex with comparably reduced bulk on both the silicon atom and the transition-metal center should be an excellent choice for the targeted tetrahedral cluster
Summary
Tetrahedral clusters that consist of main-group elements are attractive synthetic targets because of their high ring strain and reactivity.[1]. Abstract: Air- and moisture-stable heterobimetallic tetrahedral clusters [Cp(CO)2MSiR]2 (M = Mo or W; R = SitBu3) were isolated from the reaction of N-heterocyclic carbene (NHC) stabilized silyl(silylidene) metal complexes Cp(CO)2M=Si(SitBu3)NHC with a mild Lewis acid (BPh3).
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
