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An Air-Stable Heterobimetallic Si2 M2 Tetrahedral Cluster.

ABSTRACT: Air- and moisture-stable heterobimetallic tetrahedral clusters [Cp(CO)2 MSiR]2 (M=Mo or W; R=SitBu3 ) were isolated from the reaction of N-heterocyclic carbene (NHC) stabilized silyl(silylidene) metal complexes Cp(CO)2 M=Si(SitBu3 )NHC with a mild Lewis acid (BPh3 ). Alternatively, treatment of the NHC-stabilized silylidene complex Cp(CO)2 W=Si(SitBu3 )NHC with stronger Lewis acids such as AlCl3 or B(C6 F5 )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.

SUBMITTER: Dubek G

PROVIDER: S-EPMC7154520 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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An Air-Stable Heterobimetallic Si2 M2 Tetrahedral Cluster.

Dübek Gizem G Hanusch Franziska F Munz Dominik D Inoue Shigeyoshi S

Angewandte Chemie (International ed. in English) 20200220 14

Air- and moisture-stable heterobimetallic tetrahedral clusters [Cp(CO)2 MSiR]2 (M=Mo or W; R=SitBu3 ) were isolated from the reaction of N-heterocyclic carbene (NHC) stabilized silyl(silylidene) metal complexes Cp(CO)2 M=Si(SitBu3 )NHC with a mild Lewis acid (BPh3 ). Alternatively, treatment of the NHC-stabilized silylidene complex Cp(CO)2 W=Si(SitBu3 )NHC with stronger Lewis acids such as AlCl3 or ...[more]

PMID: 31943662

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