1. CO2 cleavage by tantalum/M (M = iridium, osmium) heterobimetallic complexes.
- Author
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Lachguar, Abdelhak, Ye, Christopher Z., Kelly, Sheridon N., Jeanneau, Erwann, Del Rosal, Iker, Maron, Laurent, Veyre, Laurent, Thieuleux, Chloé, Arnold, John, and Camp, Clément
- Subjects
OSMIUM ,HETEROBIMETALLIC complexes ,TANTALUM ,IRIDIUM ,HYDRIDES ,METALS - Abstract
A novel Ta/Os heterobimetallic complex, [Ta(CH
2 tBu)3 (μ-H)3 OsCp*], 2, is prepared by protonolysis of Ta(CHtBu)(CH2 tBu)3 with Cp*OsH5 . Treatment of 2 and its iridium analogue [Ta(CH2 tBu)3 (μ-H)2 IrCp*], 1, with CO2 under mild conditions reveal the efficient cleavage of CO2 , driven by the formation of a tantalum oxo species in conjunction with CO transfer to the osmium or iridium fragments, to form Cp*Ir(CO)H2 and Cp*Os(CO)H3 , respectively. This bimetallic reactivity diverges from more classical CO2 insertion into metal–X (X = metal, hydride, alkyl) bonds. [ABSTRACT FROM AUTHOR]- Published
- 2024
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